Question

Pls solve the following question -
CLASS 7

A few drops of phenolphthalein were added to an unknown solution ‘A’. It acquires pink colour. Another solution ‘B’ was added to it drop wise and the solution became colourless. Predict the nature of ‘A’ and ‘B’. Give evidence to support your answer.

Answer 1

Explanation:

when a few drops of phenolphelin were added to naoh solution . it aquire pink colour.

and B is a acid

name of that acid is hcl.