Question

what are acid-base indicators?explain with examples class10​

Answer 1

Answer:

Indicators: Indicators are those substances which tell us whether a substance is acidic or basic by change in colour. For e.g., litmus solution.

Olfactory indicators: Those substances whose odour changes in acidic or basic media are called lfactory indicators. For e.g., clove, vanilla, onion.

• Natural indicators: Turmeric, litmus (obtained from lichen)

• Synthetic indicators: Methyl orange, phenolphthalein.

Answer 2

Answer:

Examples of acid-base indicators include litmus paper, phenolphthalein, and red cabbage juice. An acid-base indicator is a weak acid or weak base that dissociates in water to yield the weak acid and its conjugate base or else the weak base and its conjugate acid. ... There is a pH range over which the indicator is useful.

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