Question

Complete the following table: (2)

S.NO. NAME OF INDICATOR COLOUR CHANGE

WITH ACID

COLOUR CHANGE

WITH BASE

1 Litmus Red ……….

2 Phenolphthalein ………… Pink

3 Methyl orange …………. Yellow

4 China rose Dark pink ……….​

Answer 1

Answer:

1)China rose solution gives dark pink (magenta) colour with acid and green colour with base.

2)litmus red Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic

3)Phenolphthalein is naturally colorless but turns pink in alkaline solutions.

4)Methyl orange is a pH indicator frequently used in titration because of its clear and distinct color variance at different pH values.

Explanation:

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