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For a salt, NaHA, whose solubility product constant is 6.32 x 10-5, determine the concentration of...

For a salt, NaHA, whose solubility product constant is 6.32 x 10-5, determine the concentration of HA- in the saturated solution. Show the solubility product constant expression. Note the number of significant figures.

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Answer #1

NaHA -----> Na+ + HA-

                 S         S

Ksp      = [Na+][HA-]

solubility product constant Ksp = 6.32*10-5

Ksp      = [Na+][HA-]

6.32*10-5 = S*S

6.32*10-5   = S2

S             = 0.7949*10-2

S             = 7.949*10-3 M

[HA-]        = 7.949*10-3 M four significant figures

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