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Saturday, 31 October

JEE Main 2021 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 4 August 2021, Shift 1, Chemistry Q55

Question 55 of 90 in this shift, Chemistry question 25 of 30, Section B.

If KSP_{SP} of CaSO4\mathrm{CaSO_4} is 9.0×10−69.0\times10^{-6} at 298K, the molar solubility of CaSO4\mathrm{CaSO_4} in 0.2M Ca(NO3)2\mathrm{Ca(NO_3)_2} is ________×10−6\times10^{-6}M. (Nearest integer)

Official answer

45

NTA final key.

Chapter
Equilibrium
Topic
Solubility Product
Idea tested
Common Ion Effect

Same idea in other shifts

Asked 6× in all
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  2. 8 Apr 2023, Shift 2 · Q85The solubility product of BaSO4\mathrm{BaSO_4} is 1×10−101\times10^{-10} at 298K. The solubility of BaSO4\mathrm{BaSO_4} in 0.1 M K2SO4\mathrm{K_2SO_4}…EasyNumerical value
  3. 29 Jun 2022, Shift 1 · Q64The solubility of AgCl will be maximum in which of the following ?EasySingle correct
  4. 24 Feb 2021, Shift 2 · Q55The solubility product of PbI2\mathrm{PbI_2} is 8.0×10−98.0 \times 10^{-9}. The solubility of lead iodide in 0.1 molar solution of lead nitrate is…MediumNumerical value
  5. 18 Mar 2021, Shift 2 · Q55The solubility of CdSO4\mathrm{CdSO_4} in water is 8.0×10−48.0 \times 10^{-4} mol L−1^{-1}. Its solubility in 0.01 M H2SO4\mathrm{H_2SO_4} solution is…MediumNumerical value

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.