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Question

When formic acid is heated with concentrated H2SO4, the gas evolved is :

A
only CO2
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B
only CO
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C
a mixture of CO and CO2
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D
a mixture of SO2 and CO2
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Solution

The correct option is B only CO
When formic acid is heated with sulphuric acid, only CO gas is evolved as it is not a redox reaction.

HCOOHconc.H2SO4−−−−−−CO+H2O

Option B is correct.

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