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Q.

lead(II) fluoride PbF2 lead {II) chloride  PbCl2 lead(II) bromide PbBr2 and lead(II) iodide PbI2 are all slightly soluble in water. Which lead salt will increase in solubility when its saturated solution is acidified?

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a

PbBr2

b

PbI2

c

PbCl2

d

PbF2

answer is A.

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Detailed Solution

 F− is a strong conjugate base and hence, gets removed in acidic medium, thus increasing solubility.

Thus, PbF2 will increase in solubility when its saturated solution is acidified.

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