The acid base reaction between HCl and NaOH produces a solution with a pH of 7 at the equivalence point.

The acid base reaction between HCl and NaOH produces a solution with a pH of 7 at the equivalence point. Why does an acid-base indicator that changes color at a pH of 5 or 9 work just as well for this reaction as one that changes color at pH 7?

Is this because the pH change is so large at the equivalence point that it covers the range of the pH color change of the indicators?

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