JEE Main 2021 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 25 July 2021, Shift 2, Chemistry Q56

Question 56 of 90 in this shift, Chemistry question 26 of 30, Section B.

Assuming that

\mathrm{Ba(OH)_2}

is completely ionised in aqueous solution under the given conditions the concentration of

\mathrm{H_3O^{+}}

ions in 0.005 M aqueous solution of

\mathrm{Ba(OH)_2}

at 298 K is ________

\times 10^{-12}

\mathrm{mol\ L^{-1}}

. (Nearest integer)

Official answer

NTA final key.

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

Same idea in other shifts

Asked 7× in all

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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.