Question

Name two natural and one synthetic indicators and also write their reaction with acid and base

Answer 1

Answer:

Artificial indicator is prepared from artificial chemicals or synthetically prepared from laboratory chemicals. Example: Phenolphthalein, Methyl Orange etc. Natural Indicators are the indicator derived from naturally occurring materials. Examples: Litmus, China Rose Petal, Red Cabbage, Turmeric etc.

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Answer 2

When Phenolphthalein is added to basic solution then it appears pink in color. Natural indicators are the substances used to determine the pH of a substance. For example, turmeric and beet root juice are the natural indicators. Synthetic indicators are the man-made indicators used to determine the pH of a substance.

Litmus, turmeric, red cabbage, China rose, etc. are some common natural indicators used widely to show the acidic or basic character of substances

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