JEE Main 2013ChemistrySome Basic Concepts of ChemistryEasyMCQ

JEE Main 2013 — Some Basic Concepts of Chemistry Question with Solution

JEE Main 2013 (07 Apr)

Question

How many litres of water must be added to 1 litre of aqueous solution of HCl with a pH of 1 to create an aqueous solution with pH of 2?

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Show full solutionCorrect option: B
Correct answer
B9.0

Step-by-step explanation

pH=1=-log [H+]

[H+]=10-1 M

Final pH=2; [H+]=10-2 M

M1V1=M2V2

(0.1 M× 1 Litre)=(0.01) V2

V2=10 L

Final volume = 10 L

Water added =10-1=9 L.
 

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About this question

This is a previous-year question from JEE Main 2013, covering the Some Basic Concepts of 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.