The concentration of Fe^2+ in a saturated solution of FeS is 6.38 x 10^-10 mol/L at a certain temperature. Calculate the Ksp for the compound at this temperature.

Question

(report in hundredths place in scientific notation)

Answer 1

FeS(s) <==> Fe²⁺(aq) + S^2-(aq)

Ksp = [Fe²⁺][S^2-]

[Fe²⁺] = 6.38x10^-10 M

[S^2-] = 6.38x10^-10 M

Plug these values into the Ksp expression and solve.