Weak Acid Equilibrium

Calculate the pH of a 1.0 M aqueous solution of sodium acetate at 25 degrees Celsius.

Solubility Product and Solubility

The solubility product of silver chromate, Ag2CrO4, at 25 degrees Celsius is 4.05 x 10^-12 mol^3/L^3. Calculate the solubility of silver chromate in: a) pure water b) 0.0500 M silver nitrate solution c) 0.0500 M potassium chromate solution

Equilibrium

At an unspecified temperature, the equilibrium reaction system I2(g) + Cl2(g) <--> 2ICl(g) has a partial pressure of ICl(g) that is 5520 times the partial pressure of I2(g). In turn, the partial pressure of I2(g) is 2.75 times the partial pressure of Cl2(g). What is Kp for the equilibrium at this unspecified temperature?

Equilibrium Concentrations

The equilibrium constant of the reaction A <--> 2B + C shown in Figure 9.3 (attached file) is 25.6 mol^2/L^2 at an unspecified temperature. The equilibrium concentrations in this system are [A]= 0.110 M, [B]= 1.78 M and [C]= 0.890 M. The reaction system is slugged with an additional amount of reactant, equal to a concentration of 0.270 M, instantaneously raising the [A] concentration to 0.380 M. The system then undergoes a shift and reestablishes equilibrium. Calculate the new equilibrium concentrations.

Absorption Spectroscopy

I need help describing an experiment where one could measure the value of the extinction coefficient of a solution with a concentration (c mol/L) of chlorophyll in water for a given wavelength. **This does not need to be a lengthy answer, nor does it need to describe all the materials needed---I really just need something conceptual. Inclusion of any used equations or measured values however would be useful.