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Solubility of a salt in the presence of a common ion

This type of question, asked 3 times: 2021 Paper 24, 29 Jun 2022, 8 Apr 2023. All 3 questions below, oldest first.

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  1. Question 1

    2021 Paper 24

    52
    The molar solubility of Zn(OH)2Zn(OH)_{2} in 0.1MNaOH0.1MNaOH solution is x×10−18Mx\times10^{- 18}M. The value of xx is (Nearest integer) (Given: The solubility product of Zn(OH)2Zn(OH)_{2} is  2×10−20)\left. \ 2 \times10^{- 20} \right)

  2. Question 2

    29 Jun 2022

    34
    The solubility of AgClAgCl will be maximum in which of the following?

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  3. Question 3

    8 Apr 2023

    141
    The solubility product of BaSO4BaSO_{4} is 1×10−101 \times10^{- 10} at 298K. The solubility of BaSO4BaSO_{4} in 0.1MK2SO4(aq)0.1MK_{2}SO_{4}\left( aq \right) solution is_____ ×10−9 g L−1\times10^{- 9}\text{ }g{\text{ }L}^{- 1} (nearest integer). Given: Molar mass of BaSO4BaSO_{4} is 233 g mol−1233\text{ }g{\text{ }mol}^{- 1}