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Question

A white solid X reacts with dil.HCl to give colourless gas which is used in fire extinguishers. The solid X is:
  1. NaCl
  2. CH3COONa
  3. Na2CO3
  4. NaHCO3

A
NaCl
B
CH3COONa
C
Na2CO3
D
NaHCO3
Solution
Verified by Toppr

Sodium bicarbonate can be used for fire extinguishers purpose as it releases carbon dioxide.
The following reaction takes place:

NaHCO3(X) + HCl NaCl + CO2 + H2O

Hence the correct option is D.

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