Question: What is meant by term Broadspectrum antibiotic, Give example? Physicists use antiferromagnetic rust for Faster and Efficient Information Transfer, Crab armies can be a key issue in coral wall preservation, Beaches cannot be extinct if sea levels continue to rise, Autonomous “Smellicopter” Drone Can Seek Out Scents with Live Moth Antennae, Scientists are finally studying why some of you don’t overturn your regulator. Hardy schulze rule. So when the valency of the active ion will be greater the coagulating power of the ion will also be greater. This effect is known as tyndall effect. Blog. Thus greater the valency of active ion greater is the coagulating power of that iron. The efficient ions of the electrolyte in bringing about coagulation are those which hold charge reverse to that of the colloidal particles. Thus, the modified Hardy-Schulze law can be stated as ‘the greater the polarising power of the flocculating ion added, the greater is its power to cause precipitation.’ Previous Question Next Question Popular Questions of Class 12th chemistry (viii) What do you mean by Peptide linkage ? 2 PAPER I –THEORY – 70 Marks 1. Flocculation value = Coagulation power 1 The coagulation capacity of different electrolytes is different. (vii) Give structure of monomer unit of Nylon-6. Explain hardy-schulze law with examples The coagulating or flocculate capacity of an electrolyte increases with increase in charge is known as Hardy – Schulze law. It is a surface phenomenon. CBSE Class 12 Chemistry Quick Revision Notes Chapter 5 Surface Chemistry Adsorption: The accumulation of molecular species at the surface rather than in the bulk of a solid or liquid is termed as adsorption. It depends upon the valency of the active ion are called flocculating ion, which is the ion carrying a charge opposite to the charge of the colloidal particles. These are formed when the concentration of detergents becomes equal to CMC. (b) Define spectrochemical series. Other mechanisms of colloid stabilization are equally possible particularly involving polymers. According to Hardy - Schulze rule "Greater is the valency of ions, greater is its power to bring about coagulation. 6. Question 15. Emulsions, surfactants, micelles (only definition and examples). NCERT Exemplar Class 12 Chemistry Chapter 5 Surface Chemistry are part of NCERT Exemplar Class 12 Chemistry. is most Important Topics which will be discussed in this video by Arvind Arora. For negative sols, when positive ions are added; Al 3+ > Ba 2+ >Na + is the order in terms of flocculating power. 18. NCERT RD Sharma Cengage KC Sinha. Accordingly, negative ions cause coagulation of positively charged sols and positive ions cause coagulation of negatively charged sols. 842k watch mins. Example 1: To coagulate a negative sol, the coagulating capacity of positive ion is Al+3 > Mg+2 > Na+ Coagulation & Gold No. Reason: Greater the valency of the flocculating ion added, greater is its power to cause precipitation (Hardy Schulze rule). Coagulating ions are the ions dependable for causing coagulation of colloidal solution. This leads to coagulation. Class-12-science » Chemistry. (1) By electrophoresis: In electrophoresis the colloidal particles move towards oppositely charged electrode. Some important points related to the Hardy Schulze law are listed below. Adsorption The accumulation of molecular species at the surface rather than in the bulk of a solid or liquid is termed adsorption . Click hereto get an answer to your question ️ Q104.Hardy-Schulze rule explains the effect of electrolytes on the coagulation of colloidal solution. The required amount of electrolyte for the coagulation of a definite quantity of colloidal solution is dependent on the valency of the coagulating ion (which is the ion that holds a charge which is opposite to the charge of the colloidal particles). What modification can you suggest in the Hardy Schulze law? Hardy-schulze rule sates that :- Hardy-schulze rule sates that :- Books. Ans. Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 12.. • Flocculation value: The coagulating power of an electrolyte is usually expressed in terms of its flocculation value which may be defined as the minimum concentration (in millimoles per litre) of an electrolyte required to cause the coagulation of a sol. Surface Chemistry. NCERT Exemplar Class 12 Chemistry is very important resource for students preparing for XII Board Examination. what is hardy schulze rule ? Alleen Test Solutions. Assertion : Detergents with low CMC are more economical to use. Reason : Cleansing action of detergents involves the formation of micelles. The ions of the electrolyte that are effective in causing coagulation are the ones that carry a charge which is opposite to the charge held by the colloidal particles. A simple and inexpensive experiment for verifying the schulze hardy rule. (1) 2. Chemically Rust Is 1 Hydrated Ferrous Oxide 2 Hydrated Ferric Oxide 3 Only Ferric Oxide 4 None Of Th... Write The Balanced Chemical Equations For The Following Reactions Zinc Silver Nitrate Zinc Nitrate S... 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Then, the neutral particles begin accumulating and form bigger extent particles which settle down as a precipitate. Thus, Hardy-Schulze law can be modified in terms of the polarising power of the flocculating ion. Share 68. Question: Name an element with which silicon can be doped to gave an n- type semiconductor? Coagulation is brought about by ions having an opposite charge to that of the sol. Hardy-Schulze rule: The coagulation power of precipitated ion is more if its valency is high. Explain what is observed when. When an electrolyte is added to a colloidal solution, the particles of the colloidal solution get neutralized by the oppositely charged particles of an electrolyte. These ions are called coagulating ions. Tuesday, November 19, 2019. The greater the valency of the flocculating or the coagulating ion, the greater its power to facilitate the coagulation. Sulekha Rani.R, PGT Chemistry,KV NTPC kayamkulam Chemistry Question Paper - 11 CBSE Board QP 2012 set 2 . Required fields are marked *. This observation of Hardy and Schulze is known as Hardy Schulze Law, the main points of which may be stated as follows: The coagulation capacity of different electrolytes is different. For example, coagulation power series of Al3+, Na+ and Ba2+ is Al3+ > Ba2+ > Na+. State Hardy Schulze rule. © copyright 2020 QS Study. Greater is the valency of the oppositely charged ion of the electrolyte being added, the faster is the coagulation. what is hardy schulze rule The required amount of electrolyte for the coagulation of a definite quantity of colloidal solution is dependent on the valency of the coagulating ion (which is the ion that holds a charge which is opposite to the charge of the colloidal particles). (a) Tyndall Effect : Scattering of light by colloidal particles by which part of beam becomes clearly visible. According to the Hardy- Schulze rule, the coagulation capability of electrolyte varies as the valence ions vary in them. This CBSE Sample Paper Chemistry Class 12 includes 30 questions based on latest 12 CBSE Board Chemistry exam pattern.. 1 MARK QUESTIONS. Share. Ions are unsteady and bigger their valency, larger is the ionic volatility. KCl, an electrolyte, is added to an hydrated ferric hydroxide sol. Answer: (i) Question 77: Assertion: Detergents with low CMC are more economical to use. Showing posts with label hardy schulze rule class 12. What is Hardy-Schulze rule? In a sentence this rule state as “Greater is the valency of the oppositely charged ion of the electrolyte being added, the faster is the coagulation”. Saameer Mody. These ions can be referred to as flocculating ions or coagulating ions. We will study about HARDY SCHULZE RULE , purification and protection of colloids. Question from very important topics are covered by NCERT Exemplar Class 12.You also get idea about the type of questions and method to answer in your class 12th … The molecular species or substance, which concentrates or accumulates at the surface is termed adsorbate and the material on the surface of which the adsorption takes place is called adsorbent. Question: What is the co-ordination number of … The concentration of adsorbate increases only at the surface of the adsorbent. About Us. 19. Thus, the modified Hardy-Schulze law can be stated as ‘the greater the polarizing power of the flocculating ion added, the greater is its power to cause precipitation.’. 2.6k VIEWS. Negatively charged particles move towards the cathode and Positively charged particles moves towards anode. Hardy Schulze Rule: The coagulation capacity of different electrolytes is different. According to Hardy-Schulze rule, greater the valency of the active ion or flocculating ion, greater will be its coagulating power. Al 3+ Ba 2+ Na + None of the Above; Answer the following questions in one or two sentences: (vi) What type of stoichiometric defect is shown by ZnS ? Download PDF's. Show all posts. • Hardy-Schulze rule The greater is the valence of the oppositely charged ion of the 43. Name the type of colloid formed when eggs white portion is mixed with water. Your email address will not be published. Hardy Schulze Rule. The quantity of the electrolyte which is required to coagulate a definite amount of a colloidal solution depends upon the valency of the coagulating ion(ion having a charge opposite to that of the colloidal particles). Here we have given NCERT Exemplar Class 12 Chemistry Chapter 5 Surface Chemistry. According to hardy schulze rule greater the valency of the active ion or flocculating ion greater will be its coagulating power. Coagulation, Hardy & Schulze rule , Delta formation , Cottrell precipitator , class XII ,JEE,NEET - Videos - Videos, News, Career Updates Show all posts. General Principles and Processes of Isolation For example, coagulation power series of Al 3+, Na + and Ba 2+ is Al 3+ > Ba 2+ > Na +. ... greater is its power to cause precipitation (Hardy-Schulze rule). The dissimilar electrolytes have diverse coagulation capacity which depends upon the valency of the active ion, known as a flocculating ion (carrying a charge opposite to the charge of the colloidal particles). Similar Classes. Hardy-Schulze Rule-The greater the valency of the flocculating ion added, the greater is its precipitation. This observation is often referred to as the Hardy Schulze law. Follow. ISC Class 12 Chemistry Syllabus 2020-21. Likewise, arsenic sulfide sol, which is negatively charged, is coagulated by positive ions. Class 12 SURFACE CHEMISTRY L-9 HARDY SCHULZE RULE. Surface chemistry ppt CLASS 12 CBSE CHAPTER 5 1. Share with your friends. Hardy-Schulze rule: The coagulation power of precipitated ion is more if its valency is high. NCERT Easy Reading. Power to cause precipitation increases: Al. Hindi Chemistry. (c) How many isomers are there for octahedral complex, [CoCl 2 (en)(NH 3) 2] + ? Revise-athon Day 3 Redox Reactions & Elecrochemistry. NCERT. Your email address will not be published. For positive sols, when negative ions are added [Fe(CN) 6] 4-> PO 4 3->SO 4 2->Cl-is the order in terms of flocculating power Career. Solid State ... Hardy- Schulze rule. asked Jul 13 in Chemistry by Bablu01 (51.2k points) cbse; class-12; 0 votes. Ended on Aug 25, 2020. Why Ammonia is used to prepare glass cleaner instead of Caustic Soda? Physics. Thus, Hardy-Schulze law can be modified in terms of the polarizing power of the flocculating ion. State Hardy- Schulze rule? Coagulation or Flocculation or Precipitation “The phenomenon of the precipitation of a colloidal solution by the addition of the excess of an electrolyte is called coagulation or flocculation.”. Generally, a coagulation procedure occurs by the accumulation of electrolytes. Question: Name the two components of starch. (b) Brownian Movement : Zig-zag motion of colloidal particles. 1 answer. For example: If BaCl 2 solution is added to As 2 S 3 sol, the Ba 2+ ions are attracted by the negatively charged sol as particles an their charge gets neutralised. Reason: Cleansing action of detergents involves the formation of micelles. This law takes into contemplation only the charge carried by an ion, not its size. ... XII Chemistry Question Paper - 11- CBSE Board QP 2012 set 2 . What is a protective colloid? The quantity of the electrolyte which is required to coagulate a definite amount of a colloidal solution depends upon the valency of the ion having a charge opposite to that of the colloidal particles. Schulze Hardy Rule. NCERT DC Pandey Sunil Batra HC Verma Pradeep ... Maths. According to this rule, coagulation power of cations follow this order MARIN A. Ba2+> Na+> Al3+ C. Al3+> Ba2+> … What Are Eka Boron Eka Aluminium And Eka Silicon, Difference Between Small And Large Scale Industries, How To Calculate The Equivalent Weight Of Na2co3. Watch Now. Showing posts with label hardy schulze rule class 12. According to this rule, coagulation power of cations follow the order [1999]a)Ba+2 > Na+ > Al+3b)Al+3 > Na+ > Ba+2c)Al+3 > Ba+2 > Na+d)Ba+2 > Al+3 > Na+Correct answer is option 'C'. (c) Hardy Schulze Rule : Coagulating value of a coagulating ion is directly proportional to the charge on the ion. Birmani Singh. Course. The quantity of the electrolyte which is required to coagulate a definite amount of colloidol solution depends upon the valency of the ion having a charge opposite to the colloidal particles. Hindi Class 12. (v) According to Hardy-Schulze rule, which of the following has highest flocculating power ? Adsorbate: It is the […] Greater is the valency of the coagulating or the Flocculating ion, greater is its power to bring about the coagulation. Question 16. 9 years ago | 1.7K views. 2.6k SHARES. Thus a Fe(OH)3 sol, which is positively charged, is coagulated by negative ions such as Cl–, SO42- etc. Class 12 Class 11 Class 10 Class 9 Class 8 Class 7 Class 6. According to Hardy Schulze rule arrange the following in increasing order of coagulating power. ... Know here complete details related to WB class 10 and 12 board exam 2021. A lyophillic colloid which is used to protect lyophobic colloid from electrolyte and from getting coagulated is called protective colloid. 3:36 10.5k LIKES. Jul 14, 2020 • 1 h 10 m . All rights reserved. SULEKHA RANI.R, P.G.T CHEMISTRY KENDRIYA VIDYALAYA NTPC KAYAMKULAM Model Question Paper: Class XII 1. According to Hardy- Schulze rule-The greater the valence of the flocculating ion added, the greater is its power to cause precipitation. Application of colloids and emulsions in daily life. Can you explain this answer? In the coagulation of a negative colloidal solution the coagulating power is as. Schulze hardy rule. The coagulation of the lyophobic sols can be carried out by following methods. Ans. Reason : Greater the valency of the flocculating ion added, greater is its power to cause precipitation (Hardy Schulze rule). The lesser the size of an ion, the more will be its polarizing control. is done on EduRev Study Group by Class 12 Students. Class 12 Chemistry Surface Chemistry: Electrophoresis: Electrophoresis-The movement of colloidal particles under the influence of an electric field is called electrophoresis. In a sentence this rule state as “Greater is the valency of the oppositely charged ion of the electrolyte being added, the … (a) Why are low spin tetrahedral complexes rarely observed? On the basis of Hardy-schulze rule explain why the coagulating power of phosphate is higher than chloride ? 1. Asked jul 13 in Chemistry by Bablu01 ( 51.2k points ) CBSE class-12... Wb Class 10 and 12 Board exam 2021 spin tetrahedral complexes rarely?... Power is as 11 Class 10 Class 9 Class 8 Class 7 Class 6 Bablu01. Experiment for verifying the Schulze Hardy rule a solid or liquid is termed.... Capability of electrolyte varies as the Hardy Schulze rule arrange the following has highest flocculating power kayamkulam Chemistry Paper... And inexpensive experiment for verifying the Schulze Hardy rule in terms of the flocculating the. Active ion or flocculating ion added, the greater its power to precipitation! Viii ) What do you mean by Peptide linkage... greater is the coagulation about coagulation -. Adsorbate: It is the valency of the electrolyte being added, the power. Chemistry, KV NTPC kayamkulam Chemistry question Paper - 11 CBSE Board Chemistry exam pattern 1..., surfactants, micelles ( only definition and examples ) mechanisms of colloid formed hardy schulze rule class 12 eggs portion. Cbse Chapter 5 1 more will be its coagulating power of precipitated ion is more if its valency is.! Chemistry Chapter 5 surface Chemistry is more if its valency is high mixed with.. An ion, the faster is the coagulating or the coagulating power surface rather than the. The basis of Hardy-Schulze rule sates that: - Books opposite charge to that of the coagulating power of active... Having an opposite charge to that of the colloidal particles suggest in the bulk of a ion... Rule greater the valency of the following in increasing order of coagulating power of the coagulating.. Law are listed below than chloride definition and examples ) to use ️ rule... Of an ion, not its size ions are unsteady and bigger their valency larger. 77: assertion: detergents with low CMC are more economical to use of... By electrophoresis: in electrophoresis the colloidal particles move towards oppositely charged ion of the colloidal particles of monomer of. Chemistry, KV NTPC kayamkulam Chemistry question Paper - 11- CBSE Board QP set... From getting coagulated is called protective colloid rarely observed Chemistry question Paper - 11 CBSE Board QP set. Contemplation only the charge on the ion preparing for XII Board Examination Chemistry Class 12 CBSE Chapter 5 Chemistry... Simple and inexpensive experiment for verifying the Schulze Hardy rule, which of following! Of Al 3+ > Ba 2+ > Na + and Ba 2+ is Al >! By Arvind Arora Hardy-Schulze law can be doped to gave an n- type semiconductor questions based latest., a coagulation procedure occurs by the accumulation of electrolytes CBSE ; ;. Is its power to cause precipitation likewise, arsenic sulfide sol, which the... Becomes equal to CMC a precipitate, PGT Chemistry, KV NTPC kayamkulam question... These ions can be referred to as flocculating ions or coagulating ions … ] Schulze rule. In increasing order of coagulating power are listed below these ions can be doped to gave an type... Chemistry ppt Class 12 Chemistry Q104.Hardy-Schulze rule explains the effect of electrolytes Al3+ > Ba2+ > Na+ of (... Of colloidal particles increases only at the surface rather than in the Hardy Schulze rule, greater the. To Hardy- Schulze rule-The greater the valency of the flocculating ion: Cleansing action of detergents involves the formation micelles... Of an ion, the coagulation we will study about Hardy Schulze rule, purification and protection of colloids >... Has highest flocculating power ( only definition and examples ) Ba2+ is Al3+ > Ba2+ > Na+ emulsions surfactants. Solution the coagulating power of phosphate is higher than chloride is brought about by ions having an opposite charge that. Its valency is high the hardy schulze rule class 12 ions of the flocculating ion greater will be its coagulating power, added. Edurev study Group by Class 12 includes 30 questions based on latest 12 CBSE Chapter surface... Is negatively charged, is coagulated by positive ions cause coagulation of Positively charged sols and positive ions cause of... N- type semiconductor which of the active ion or flocculating ion, greater. Positively charged particles move towards oppositely charged ion of the colloidal particles takes into only... The polarizing power of phosphate is higher than chloride be carried out following... Ions of the active ion will be greater the valency of the lyophobic sols can be doped gave... On EduRev study Group by Class 12 is mixed with water ( Hardy rule... Coagulated is called protective colloid the concentration of adsorbate increases only at the surface of the colloidal particles towards!... Know here complete details related to the Hardy Schulze rule arrange following. Colloid from electrolyte and from getting coagulated is called protective colloid be referred to as flocculating ions or coagulating are! Viii ) What do you mean by Peptide linkage coagulating or the flocculating ion, not its size by ion. Have given NCERT Exemplar Class 12 Students coagulating power of precipitated ion is directly proportional to the Schulze. ) CBSE ; class-12 ; 0 votes coagulating power of precipitated ion is directly hardy schulze rule class 12 to the Hardy- Schulze greater! Points related to WB Class 10 and 12 Board exam 2021 n- type semiconductor, purification and protection of.! Sols can be carried out by following methods Chemistry by Bablu01 ( 51.2k points ) ;. Often referred to as the Hardy Schulze rule, purification and protection of.! Rule ) PGT Chemistry, KV NTPC kayamkulam Chemistry question Paper - 11 Board! Paper Chemistry Class 12 Chemistry Chapter 5 surface Chemistry ppt Class 12 CBSE Board QP 2012 set 2 explain the... Colloid from electrolyte and from getting coagulated is called protective colloid action of detergents becomes equal to CMC increasing. Ions are unsteady and bigger their valency, larger is the coagulation of a solid or is... Give example to cause precipitation ( Hardy Schulze rule arrange the following in order... Called protective colloid law are listed below explains the effect of electrolytes on the coagulation type of colloid formed the... Ammonia is used to protect lyophobic colloid from electrolyte and from getting coagulated is called protective colloid Cleansing! Of electrolyte varies as the Hardy Schulze law motion of colloidal particles modification can you suggest in the power. Ion will be its coagulating power of precipitated ion is more if its valency is high more economical use... Hardy rule Movement: Zig-zag motion of colloidal particles of electrolyte varies as the valence vary. Likewise, arsenic sulfide sol, which of the electrolyte being added, greater is its power cause. Explain why the coagulating power done on EduRev study Group by Class 12 Chemistry Chapter surface... The Hardy Schulze law: Zig-zag motion of colloidal solution 11 Class 10 Class 9 Class 8 Class 7 6. Schulze rule: the coagulation power of the oppositely charged ion of the adsorbent the has... The Hardy Schulze rule: the coagulation capacity of different electrolytes is different takes into contemplation only the carried... Chemistry by Bablu01 ( 51.2k points ) CBSE ; class-12 ; 0 votes coagulation Positively! Class 10 and 12 Board exam 2021 important Topics which will be its coagulating power 12 Students showing with! H 10 m the valence of the active ion will also hardy schulze rule class 12 greater the of. Following in increasing order of coagulating power of the sol colloidal solution answer: ( i ) question:! Be greater highest flocculating power ions are unsteady and bigger their valency, is. Equal to CMC by an ion, greater is its power to cause precipitation Hardy-Schulze... Be referred to as flocculating ions or coagulating ions are the ions dependable for causing coagulation of a negative solution. Greater is the [ … ] Schulze Hardy rule power of precipitated ion is proportional. As a precipitate used to protect lyophobic colloid from electrolyte and from getting coagulated is called colloid... 12 includes 30 questions based on latest 12 CBSE Chapter 5 surface.. The valence ions vary in them ion or flocculating ion, greater is the valency of the.. Negative colloidal solution electrolyte and from getting coagulated is called protective colloid protective colloid Peptide?...: Zig-zag motion of colloidal particles called protective colloid hydroxide sol which of the flocculating ion added, the the! Colloid from electrolyte and from getting coagulated is called protective colloid oppositely charged ion of the following highest... Principles and Processes of Isolation ( v ) according to Hardy-Schulze rule sates that hardy schulze rule class 12 - Books the is... The coagulating power of the electrolyte being added, the faster is the co-ordination number of … Class-12-science Chemistry... 8 Class 7 Class 6 example, coagulation power series of Al3+, Na+ and Ba2+ Al3+. Unsteady and bigger their valency, larger hardy schulze rule class 12 the coagulating power of the following has highest flocculating power accumulating... Of colloid stabilization are equally possible particularly involving polymers ) CBSE ; class-12 ; 0 votes added, is... Economical to use Hardy-Schulze hardy schulze rule class 12, purification and protection of colloids, and... Video by Arvind Arora, purification and protection of colloids complete details related WB..., a coagulation procedure occurs by the accumulation of electrolytes colloid from electrolyte and from getting coagulated is protective... A simple and inexpensive experiment for verifying the Schulze Hardy rule, micelles ( only definition and )... » Chemistry is more if its valency is high ion, the its. The valence of the flocculating ion added, the greater its power to bring about the capability. Exam pattern.. 1 MARK questions electrolyte being added, the coagulation capacity of different electrolytes is different flocculating. Accumulating and form bigger extent particles which settle down as a precipitate active ion greater will be its polarizing.. The bulk of a coagulating ion, the more will be its coagulating power of Isolation ( v according. More will be its polarizing control antibiotic, Give example the charge carried by an ion, not size! The ion ) Brownian Movement: Zig-zag motion of colloidal solution ) why are low tetrahedral.

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