A mixture of 2.3 g formic acid and 4.5 g 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
2.8
3.0
1.4
4.4
As we learnt that
Number of Moles -
No of moles = given mass of substance/ molar mass of substance
-
(H2O is absorbed by H2SO4)
(CO2 is absorbed by KOH and H2O by H2SO4)
Total moles of CO is 0.1 mole i.e. 2.8 gm.
Option 1)
2.8
This is correct.
Option 2)
3.0
This is incorrect.
Option 3)
1.4
This is incorrect.
Option 4)
4.4
This is incorrect.