Question

When few drops of phenolphthalein are added to sample 'A' it turned pink. To this pink coloured solution we added a few drops of sample 'B'. With continuous stirring the pink colour disappears. Samples 'A' and 'B' are: 

1) sample 'A' is acidic and sample 'B' is neutral.

2) sample 'A' is basic and sample 'B' is neutral.

3) sample 'A' is basic and sample 'B' is acidic.

4) sample 'A' is acidic and sample 'B' is basic.
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Answer 1

Answer:

Answer. Phenolphthalein is a weak acid, which is why when it is added in a strong base, it gives pink color and the color gets intense as the PH of the base increases. If a strong acid such as HCL is added in this solution, it with react with base and cause neutralization.

Explanation:

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