$\mathrm{A_3B_2}$ is a sparingly soluble salt of molar mass M ($\mathrm{g\,mol^{-1}}$) and solubility $x$ g $\mathrm{L^{-1}}$. The solubility product satisfies $\mathrm{K_{sp}}=a\left(\frac{x}{\mathrm{M}}\right)^5$. The value of $a$ is __________ . (Integer answer)

JEE Main 2021 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 31 August 2021, Shift 1, Chemistry Q54

Question 54 of 90 in this shift, Chemistry question 24 of 30, Section B.

\mathrm{A_3B_2}

is a sparingly soluble salt of molar mass M (

\mathrm{g\,mol^{-1}}

) and solubility

x

\mathrm{L^{-1}}

. The solubility product satisfies

\mathrm{K_{sp}}=a\left(\frac{x}{\mathrm{M}}\right)^5

. The value of

a

is __________ . (Integer answer)

Official answer

108

NTA final key.

Chapter: Equilibrium
Topic: Solubility Product
Idea tested: Solubility-Ksp Relationship

Same idea in other shifts

Asked 8× 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.