What is the molar solubility (in mol L1) of a salt with general molecular formula MX (where M is a cation and X

Question

What is the molar solubility (in mol L-1) of a salt with general molecular formula MX (where M is a cation and X

is an anion) in a solution already containing 0.275 mol L-1 X- ?

The Ksp of MX = 9.48 x 10-7

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