Which gas is evolved when carboxylic acid reacts with weaker bases like $N a H C O_{3}$ ?

C O

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C O_{2}

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H_{2}

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C O

and

C O_{2}

both

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Solution

The correct option is D $C O_{2}$
Carboxylic acids react with weaker bases such as carbonates and bicarbonates to evolve $C O_{2}$
$R C O O H + N a H C O_{3} \to R C O O N a + H_{2} O + C O_{2}$

Hence the correct option is B.

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