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Q.

Which of the following acid is/are evolve CO2 gas from carbonate salt?

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a

dil. HCl

b

dil. CH3COOH

c

dil. HCN

d

dil. H3BO3

answer is A, B.

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Detailed Solution

Dil. HCl and dil. CH3COOH acid are CO2 gas evolve as from carbonate salt. Acids more potent than carbonic acid transform carbonate salt into CO2 (g). The reaction is having follows, HCI>CH3COOH>H2CO3>HCN>H3BO3 (Order of acidic strength)

Hence, options A, and B are correct.

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