KHP + NaOH complete reaction question
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KHP + NaOH complete reaction question

[From: ] [author: ] [Date: 12-04-16] [Hit: ]
As soon as you add base (OH-), it will react with the H3O+ to form water. Since H3O+ was removed from solution, LeChateliers principle says that HA will ionize more to replace the H3O+ that was removed. Then you add more base to remove the new H3O+, and this process repeats until there is no more HA left.......
If KHP is a weak acid, why is the reaction between KHP and NaOH considered to be a complete reaction, not an equilibrium reaction?

Thanks for you help!

-
A weak acid will react with a strong base completely just like a strong acid. Why?

A weak acid ionizes to a small degree in water as: HA + H2O <==> H3O+ + A-

As soon as you add base (OH-), it will react with the H3O+ to form water. Since H3O+ was removed from solution, LeChatelier's principle says that HA will ionize more to replace the H3O+ that was removed. Then you add more base to remove the new H3O+, and this process repeats until there is no more HA left.
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