Solubility and Complexation Equilibria

Ksp Expressions

Which is more soluble?

1. CaCO3

2. FeCO3

Which is more soluble?

1. FeCO3

2. CaF2

Determining Ksp Experimentally

CaF2 dissolves to an extent of 0.1085 g/L.

What is the value of Ksp for CaF2, in mol/L?

+ - + - -10AgCl(s) Ag (aq) + Cl (aq) Ksp = [Ag ][Cl ] = 1.8 10

Using Ksp to predict solubility.

What is the solubility of AgCl, in mol/L?

2+ - 2+ - 2 -52PbCl (s) Pb (aq) + 2 Cl (aq) Ksp = [Pb ][Cl ] = 1.7 10

What is the solubility of PbCl2, in mol/L?

What is the solubility of Fe(OH)3, in mol/L?

Common Ion Effect: The presence of an ion common to asolubility equilibria will decrease solubility of the salt.

What is the solubility of PbCl2 in a 0.200 M NaCl solution?

Is a Bronsted acid-base reaction also a Lewis acid-base reaction?

1. Yes2. No

Which of the following can water NOT act as?

1 2 3 4

25% 25%25%25%1. Bronsted acid2. Bronsted base3. Lewis acid4. Lewis base

Complexation Reactions and Equilibria