JEE Main 2021 — Surface Chemistry Question with Solution
From: JEE Main 2021 (Online) 20th July Evening Shift
Question
100 ml of 0.0018% (w/v) solution of Cl ion was the minimum concentration of Cl required to precipitate a negative sol in one h. The coagulating value of Cl ion is _________ (Nearest integer)
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Show full solutionCorrect answer: 0.5070
Correct answer
0.5070
Step-by-step explanation
Coagulation value The minimum concentration of electrolyte in millimoles required to cause coagulation of 1 L of colloidal solution.
Given, 0.0018 g Cl present in 100 mL solution
Coagulation value of Cl is
Given, 0.0018 g Cl present in 100 mL solution
Coagulation value of Cl is
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This is a previous-year question from JEE Main 2021, covering the Surface Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.