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Effect on Indicators by Acids and Bases

What is an in...

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What is an indicator?

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Solution

Indicator
An indicator is a chemical compound that changes its colour in presence of an acid or base.
Indicators are generally derived from plant pigments and are mildly acidic or basic in nature.
Types of indicators
Natural indicators. For example red cabbage.
Synthetic indicators. For example phenolphthalein.
Olfactory indicators. For example onion.

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Effect on Indicators by Acids and Bases

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