Answer the following: (i) Dry ammonia has no action on litmus paper but a solution of ammonia in water turns red litmus paper blue. Why is it so?


#1

Answer the following:
(i) Dry ammonia has no action on litmus paper but a solution of ammonia in water turns red litmus paper blue. Why is it so?
(ii) What is the colour of methyl orange in baking soda?


#2

(i) Dry ammonia produces no hydroxide ions (OH-).
Therefore, red litmus paper does not turn blue. But a solution of ammonia in water contains OH- ions.

Therefore, red litmus turns blue.
(ii) Baking soda provides a basic medium. Hence, colour of methyl orange will be yellow.
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