Question

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

(i) It turns lime water milky

 (ii) It extinguishes a burning splinter 

(iii) It dissolves in a solution of sodium hydroxide 

(iv) It has a pungent odour 

(a) (i) and (ii)

(b) (i), (ii) and (iii) 

(c) (ii), (iii) and (iv) 

(d) (i) and (iv)

Answer 1

The answer is (a) (i) and (ii)

• Reaction between Sodium hydrogen carbonate and acetic acid lead to evolution of carbon-dioxide gas. 
• CO₂ turns the lime water milky and extinguish a burning splinter.