Question

When sodium hydrogen carbonate is added to ethanoic acid, a gas evolves. Consider the following statements about the gas evolved.

1. It turns lime water milky.
2. It is evolved with brisk effervescence.
3. It has a smell of burning sulfur.
4. It is also a by-product of respiration.

Options

• (A) and (B) only

• (B) and (D) only

• (A), (C) and (D)

• (A), (B) and (D)

Answer 1

(A), (B) and (D)

Explanation:

The gas evolved is carbon dioxide with brisk effervescence. It turns lime water milky. It is also a by-product of respiration.

\[\ce{CH3COOH + NaHCO3 -> CH3COONa + H2O + CO2}\]