How to Decrease the Solubility of PbSO₄?

What can decrease the solubility of PbSO₄?

The solubility of PbSO₄ (Ksp =6.3×10^-7) decreases with adding which of the following?

a) HCl

b) NaCl

c) H₂SO₄

d) NaOH

Final answer:

The solubility of PbSO₄ (Ksp =6.3×10^-7) decreases with adding NaCl.

The solubility of PbSO₄ (Ksp =6.3×10^-7) decreases with adding b) NaCl. When NaCl is added, the concentration of the chloride ion increases, which causes the equilibrium of the reaction to shift to the left, resulting in precipitation of PbSO₄ and a decrease in its solubility.

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