Question

B My Note At AJAX Chemical , INC. a critical reaction requires the solubility of Fe(OH)2 to be minimal in a critical patented reaction. As one of the staff chemists, it is your job to find the molar solubility of this salt in a solution that is also 0.1970 M in cesium hydroxide, COH. Solubility = The Ksp of iron(II) hydroxide is 4.90 x10-17

Answer 1

Ksp of Fe(OH)2 = 4.90 x 10^-17

Fe(OH)2 (s)   ------------> Fe2+ (aq) + 2 OH- (aq)

                                            S                0.1970 M

Ksp = [Fe2+][OH-]^2

4.90 x 10^-17 = s x (0.1970)^2

s = 1.26 x 10^-15

molar solubility = 1.26 x 10^-15 M