JEE Main 2022 · ChemistryMultiple choiceSingle correctMediumCalculation

JEE Main 29 July 2022, Shift 2, Chemistry Q64

Question 64 of 90 in this shift, Chemistry question 4 of 30, Section A.

200 mL of 0.01 M HCl is mixed with 400 mL of 0.01M

\mathrm{H_2SO_4}

. The pH of the mixture is __. Given: log 2 = 0.30, log 3 = 0.48, log 5 = 0.70, log 7 = 0.84, log 11 = 1.04

(1)1.14
(2)1.78Official answer
(3)2.34
(4)3.02

Official answer

Option 2

NTA final key.

Chapter: Equilibrium
Topic: pH and Buffers
Idea tested: pH of Mixed Strong Acids

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.