Question

How many an indicator differentiate an acid and a base
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Answer 1

Answer:

Acid - Base indicators (also known as pH indicators) are substances which change colour with pH. They are usually weak acids or bases, which when dissolved in water dissociate slightly and form ions. Consider an indicator which is a weak acid, with the formula HIn.

Examples of acid-base indicators include litmus paper, phenolphthalein, and red cabbage juice.

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