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Question

Which gas is produced when compound X reacts with washing soda?
  1. Hydrogen
  2. Oxygen
  3. Methane
  4. Carbon dioxide

A
Hydrogen
B
Oxygen
C
Methane
D
Carbon dioxide
Solution
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(a) X is ethanoic acid, CH3COOH.

(b) Compound X can be obtained from compound Y by the action of an acid or a base i.e. by saponification.

(c) CO2 gas is produced.

CH3COOH+Na2CO32CH3COONa+CO2

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