A mixture of 2.3g formic acid and 4.5g oxalic acid is treated with conc. H2SO4. The evolved gaseous mixture is passed through KOH pellets. Weight (in g) of the remaining product at STP will be:
A
2.8
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B
3
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C
1.4
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D
4.4
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Solution
The correct option is A 2.8
Gaseous mixture formed is CO and CO2. When it is passed through KOH, only CO2 is absorbed. So the remaining gas is CO. So, weight of remaining gaseous product CO is 220×28=2.8g