PYQ Vault

Ksp of an A3B2 salt from its solubility in grams per volume and molar mass

The same question, asked 2 times: 2021 Paper 22*, 1 Feb 2024. Every wording below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    2021 Paper 22

    60
    A3 B2A_{3}{\text{ }B}_{2} is a sparingly soluble salt of molar mass M(gmol−1)M\left( gmol^{- 1} \right) and solubility x gL−1x\text{ }gL^{- 1}. The solubility product satisfies Ksp=a(xM)5K_{sp}=a\left( \frac{x}{M} \right)^{5}. The value of aa is (Integer answer)
  2. Question 2

    1 Feb 2024

    139
    Solubility of calcium phosphate (molecular mass, M) in water is WgW_{g} per 100 mL100\text{ }mL at 25∘C25^{\circ}C. Its solubility product at 25∘C25^{\circ}C will be approximately.

    Tap an option to check your answer.