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)

Medium

Solution

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Correct option is B)

The gas that evolved is carbon dioxide gas which has the property of turning lime water milky. It can extinguish the burning candle or splinter and it gets dissolved in sodium hydroxide solution to form sodium carbonate but this gas is odourless in nature. So, the last statement is false regarding the evolved gas.

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