JEE Main 2022 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 27 July 2022, Shift 1, Chemistry Q86

Question 86 of 90 in this shift, Chemistry question 26 of 30, Section B.

At 310 K, the solubility of

\mathrm{CaF_2}

in water is

2.34 \times 10^{-3}

g/100 mL. The solubility product of

\mathrm{CaF_2}

is _____

\times 10^{-8}

(mol/L)

^3

. (Give molar mass :

\mathrm{CaF_2}

= 78 g mol

^{-1}

)

Official answer

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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25 Feb 2021, Shift 2 · Q32The solubility of $\mathrm{Ca(OH)_2}$ in water is : [Given : The solubility product of $\mathrm{Ca(OH)_2}$ in water $=5.5\times10^{-6}$ ]MediumSingle correct
9 Jan 2020, Shift 2 · Q27The solubility product of $\mathrm{Cr(OH)_3}$ at 298 K is $6.0\times10^{-31}$ . The concentration of hydroxide ions in a saturated solution…MediumSingle correct

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.