Which gas is evolved on heating oxalic acid with $N a H C O_{3}$ ?

C O_{2}

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C O

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H_{2}

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H_{2} O

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Solution

The correct option is A $C O_{2}$
If to a small portion of the organic compound taken in a test tube, a pinch of solid sodium bicarbonate is added. Evolution of carbon dioxide with brisk effervescence shows the presence of carboxylic acid. Since oxalic acid is also carboxylic acid hence $C O_{2}$ will be evolved.

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