Question

The label on the bottle of chemicals is spoiled. How will you find whether the chemical is acidic or not?

Answer 1

Answer:

By use of litmus paper :

If the given solution is acidic, it turns blue litmus to red litmus. If the given solution is basic, it turns red litmus to blue litmus.

Answer 2

ANswer :

We can find whether the chemical is an acid or a base by using an indicator.

ExplanatioN :

Indicators are those substances that help us to identify whether a substance is an acid or a base. There are natural and synthetic indicators and the reaction of a chemical with some common ones are given below:

⇒ Blue Litmus

Reaction with acid = Turns red

Reaction with base = Remains the same

⇒ Red Litmus

Reaction with acid = Remains the same

Reaction with base = Turns blue

⇒ Turmeric

Reaction with acid = Remains the same

Reaction with base = Turns red

⇒ Phenolphthalein

Reaction with acid = Remains crystal clear

Reaction with base = Turns pink

⇒ China Rose

Reaction with acid = Turns magenta

Reactions with base = Turns green

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