Question

7.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

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"" B "" is the right option.

When sodium hydrogen carbonate is added to acetic acid, carbon dioxide (CO2) gas is evolved.

(Sodium hydrogen carbonate + Acetic acid = Sodium acetate + water + carbon dioxide)

Carbon dioxide supports all the above three properties.