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A. A result of the common-ion effect is ________. a. that the selective precipit

ID: 806664 • Letter: A

Question

A. A result of the common-ion effect is ________.

a. that the selective precipitation of a metal ion, such as Ag+, is promoted by the addition of an appropriate counterion (X-) that produces a compound (AgX) with a very low solubility

b. that some ions, such as Na+ (aq), frequently appear in solutions but do not participate in solubility equilibria

c. that ions such as K+ and Na+ are common ions, so that their values in equilibrium constant expressions are always 1.00

d. that common ions precipitate all counter-ions

e. that common ions, such as Na+ (aq), don't affect equilibrium constants

Explanation / Answer

a. that the selective precipitation of a metal ion, such as Ag+, is promoted by the addition of an appropriate counterion (X-) that produces a compound (AgX) with a very low solubility

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