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Question:

In an experiment to study the properties of acetic acid, a student takes about 2 mL of acetic acid in a dry test tube. He adds about 2 mL of water to it and shakes the test tube well. He is likely to observe that:

the solution becomes light orange

the acetic acid dissolves readily in water

water floats over the surface of acetic acid

acetic acid floats over the surface of water

Solution:

Acetic acid is a carboxylic acid which has a -COOH group. Water and the -COOH group form hydrogen bonds which makes acetic acid readily soluble in water.