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Consider the given examples listed here, find out which substance from the list will turn phenolphthalein pink? (a) vinegar ( b) water (c) lemon juice (d) soap.

Consider the given examples listed here, find out which substance from the list will-example-1
User Yoo
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1 Answer

4 votes

Answer:

(d) soap.

Step-by-step explanation:

A soap is obtained by alkaline hydrolysis of a fat to yield the soap and glycerol. This process is known as saponification.

A soap solution is usually basic. Since phenolphthalein turns pink in an alkaline solution, then when phenolphthalein is added to a soap solution, the solution soon turns pink because it is alkaline in nature.

As a matter of fact, a soap sometimes has almost the pH of baking soda!

User Erik Larsson
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