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Uses of Calcium Carbonate

Acetic acid i...

Question

Acetic acid is heated with $N a_{2} C O_{3}$ in a test tube. A colourless and odourless gas (X) is evolved. The gas turns lime water milky. Identify X.

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Solution

$2 C H_{3} C O O H + N a_{2} C O_{3} ⟶ 2 C H_{3} C O O N a + C O_{2} + H_{2} O$
Here, $C O_{2}$ turns lime water milky.
$∴ X$ is $C O_{2}$ gas.

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