What mass of solid sodium acetate, NaCH3COO, must be added to 2.50 L of an aqueous solution
of 0.55 M acetic acid, CH3COOH, in order to make a buffer solution whose pH is 4.50 ?
Assume that adding the solid does not change the volume of the solution. Use the simultaneous
equations method to do the calculations and note and justify any simplifying assumptions made.