Question

A student adds 4 mL of acetic acid to a test tube containing 4 mL of distilled water. He then shakes the test tube and leaves it to settle. After about 10 minutes he observes:
(A) a layer of water over the layer of acetic acid
(B) a layer of acetic acid over the layer of water
(C) a precipitate settling at the bottom of the test tube
(D) a clear colourless solution

Answer 1

Answer:

a layer

Explanation:

a larer of water in the acetic acid

Answer 2

(D) a clear colourless solution

Explanation:

Acetic acid, also known as Ethanoic acid is represented by the chemical formula CH3COOH. Acetic acid is a weak acid, so when water is added, it will partially disintegrate into CH3COO- and H+ ions. But the disintegration is very minimal due to the chemical property of acetic acid. Hence when equal amount of distilled water is added to acetic acid, it will probably form a homogenous solution because acetic acid gets dissolved in water. So, a clear colorless solution will be left in the test tube.