Chapter 16.6, Problem 16.6CC

The beaker on the left below represents a buffer solution of a weak acid HA and its conjugate base, A⁻. (Water molecules and spectator ions have been omitted for clarity.)

1. a Which beaker on the right, X or Y, depicts the solution after the addition of two formula units of NaOH?
2. b How many HCl molecules can be added to the original buffer solution before the buffer capacity is exceeded?
3. c Draw a picture of the solution where the buffer capacity has been exceeded by the addition of HCl.