Question

Sodium hydrogencarbonate when added to acetic acid evolves a gas. Which of the following statements are true about the gas evolved?

1.  It turns lime water milky
2. It extinguishes a burning splinter
3. It dissolves in a solution of sodium hydroxide
4. It has a pungent odour

Options

• (i) and (ii)

• (i), (ii) and (iii)

• (ii), (iii) and (iv)

•  (i) and (iv)

Answer 1

(i), (ii) and (iii)

Explanation - 

The gas evolved is carbon dioxide (CO₂). The statements (i), (ii) and (iii) are true about the gas.