1. List the species present at equilibrium in a solution with the following composition:

NH4Cl = 0.0200 mol/L NaOH = 0.0430 mol/L

H2SO4 = 0.0150 mol/L NaNO3 = 0.0100 mol/L

2. Write the n equations for n unknowns describing the equilibrium composition of

this system.

3. Make a spreadsheet and use Excel’s Solver function to determine the equilibrium

pH and concentrations of all species in this solution.