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 * //When the equivalence point is getting close, will the pH change a little or a lot?//**

Hint: The equivalence point is the point where the amount of acid and base are present in just the right amount to mutually neutralize eachother. Think about the following 3 moments:

1) Just before reaching equivalence - the solution is acidic but only needs a drop or two of base to be neutralized 2) At the equivalence point - the next drop of base will turn the solution basic 3) Just after reaching the equivalence point - ever bit of base added increases the basic character of the solution

The difference between 1, 2, and 3 above is literally on the order of a few drops. Compared to the volume of base added, do you think the pH will change a little or a lot?

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