When a strong acid is titrated with a strong base using phenolphthalein as an indicator, the color changes abruptly at the endpoint of the titration and can be switched back and forth by the addition of only one drop of acid or base. The reason for the abruptness of this color change is that ________.

When a strong acid is titrated with a strong base using phenolphthalein as an indicator, the color changes abruptly at the endpoint of the titration and can be switched back and forth by the addition of only one drop of acid or base. The reason for the abruptness of this color change is that the acid has been saturated with the base.

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adioabiola adioabiola · Answer 2 · 2022-01-04T11:44:08+01:00

The reason for the abruptness of this colour change is that the acid has been saturated with base in which case neutralisation is complete and any additional acid or base causes the abrupt colour change.

Discussion:

The reaction between an acid and a base to yield a salt and water is termed neutralisation.

As in this scenario, therefore, when a strong acid is titrated with a strong base using phenolphthalein as an indicator, the color changes abruptly at the endpoint of the titration and can be switched back and forth by the addition of only one drop of acid or base. The abruptness of this color change can be attributed to the fact that the acid has been saturated with the base.