Question

An aqueous solution turns red litmus solution blue. Excess addition of which of the following solutio hin would reverse the change?

(a) Baking powder

(b) Vinegar

(c) Soap solution

(d) Lime

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Answer 1

Answer:

(d) Lime. is the answer

Answer 2

Answer:

(b) Vinegar.

Explanation:

Since the litmus paper is turned blue, which means that the aqueous solution is basic in nature. To reverse the change we need to add something acidic. Since vinegar is acidic in nature, therefore we will add vinegar to reverse the change.