Question: 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

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

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