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Organic Compounds

An organic co...

Question

An organic compound with molecular formula $C_{2} H_{4} O_{2}$ produces brisk effervescence on addition of sodium carbonate/bicarbonate.
(a) Identify the organic compound
(b) Name the gas evolved.
(c) How will you test the gas evolved ?
(d) Write the chemical equation for the above reaction.
(e) List two important uses of the above compound

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Solution

(a) Acetic acid $(C H_{3} C O O H)$
(b) Carbon dioxide $(C O_{2})$
(c) Passing the gas through lime water. If it turns white, then it is carbon dioxide.
(d) $2 C H_{3} C O O H + {N a}_{2} C O_{3} ⟶ C H_{3} C O O N a + C O_{2} + H_{2} O$
$C H_{3} C O O H + N a H C O_{3} ⟶ C H_{3} C O O N a + C O_{2} + H_{2} O$
(e) The two uses are:
(i) It is used as vinegar.
(ii) It preserves some pickles.

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