1. Draw the titration curve of ammonia being titrated with hydrochloric acid. Clearly label the following on the titration curve:

e The initial weak base reaction that occurs before any hydrochloric is added.

Circle the buffer region on the titration curve.

Clearly label the equivalence point and write the reaction that occurs at the equivalence point.

Write the reaction that determines the pH after the equivalence point.

2. Draw the titration curve of phosphoric acid and write each reaction that occurs at each equivalence point.