Which of these statements about the common-ion effect is most correct? (A) the solubility of a salt MA is decreased in a solution that already contains either M+ or A- (B) common ions alter the equilibrium constant for the reaction of an ionic solid with water. (C) the common ion effect does not apply to unusual ions like SO32-. (D) the solubility of a salt MA is affected equally by the addition of either A- or an uncommon ion.

Chemistry by OpenStax (2015-05-04)
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Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
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Chapter15: Equilibria Of Other Reaction Classes
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Problem 16E: Assuming that no equilibria other than dissolution are involved, calculate the concentration of all...
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1. Which of these statements about the common-ion effect is most correct?

(A) the solubility of a salt MA is decreased in a solution that already contains either M+ or A-

(B) common ions alter the equilibrium constant for the reaction of an ionic solid with water.

(C) the common ion effect does not apply to unusual ions like SO32-.

(D) the solubility of a salt MA is affected equally by the addition of either A- or an uncommon ion.

Group of answer choices
Statement (C) is most correct.
Statement (A) is most correct.
Statement (B) is most correct.
Statement (D) is most correct.
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