05 What is an acd-base indicator? Nome two-
naturally occuring Indicators.
Answers
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. ... Phenolphthalein is a colourless, weak acid which dissociates in water forming pink anions.
red cabbage juice, onion paste, turmeric, lemon juice etc. Natural indicators are turmric,litmus,china rose etc are somenatural indicators. Some Natural Indicatorsare red Cabbage juice,turmeric,china rose[hibiscus] and litmus.
Explanation:
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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. An acid-base indicator is either a weak acid or weak base that exhibits a color change as the concentration of hydrogen (H+) or hydroxide (OH-) ions changes in an aqueous solution. Acid-base indicators are most often used in a titration to identify the endpoint of an acid-base reaction. They are also used to gauge pH values and for interesting color-change science demonstrations.
eg: litmus, red cabbage, turmeric, etc....