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A mixture of 2.3 g formic acid and 4.5 g...

A mixture of 2.3 g formic acid and 4.5 g oxalic acid is treated with conc. `H_(2)SO_(4)`. The evolved gaseous mixture is passed through KOH pellets. Weight (in g) of the remaining product at STP will be

A

`1.4`

B

`3.0`

C

`2.8`

D

`4.4`

Text Solution

Verified by Experts

The correct Answer is:
C
`underset(0.05)(COO)Hoverset(H_(2)SO_(4))(rarr)underset(0.05)(H_(2)O)+underset(0.05)(CO)+underset(0.05)(CO)`
`H_(2)underset(0.05)(C_(2))O_(4)overset(H_(2)SO_(4))(rarr)underset(0.05)(H_(2)O)+underset(0.05)(CO)+underset(0.05)(CO_(2))`
Total moles of `CO=0.05+0.05=0.10`
`KOH` absorbs `CO_(2)(g)`
:. Mass of `CO=0.1xx28=2.8 g`.
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