Question

In: Chemistry

The molar solubility of aluminum phosphate in a water solution is  M? The molar solubility of iron(II)...

The molar solubility of aluminum phosphate in a water solution is  M?

The molar solubility of iron(II) carbonate in a water solution is  M?

Solutions

Expert Solution

AlPO4(s) ----------------> Al^3+ (aq) + PO4^3- (aq)

                                        x                 x

Ksp     = [Al^3+][PO4^3-]

1.3*10^-20   = x*x

x^2             = 1.3*10^-20

x               = 1.14*10^-10

solubility of aluminum phosphate = 1.14*10^-10 M

FeCO3(s) ----------------> Fe^2+ (aq) + CO3^2- (aq)

                                         x                     x

Ksp         =    [Fe^2+][CO3^2-]

3.13*10^-11   = x*x

x^2         = 3.13*10^-11

x            = 5.6*10^-6

The solubility of iron(II) carbonate = 5.6*10^-6 M


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