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Q.

On complete combustion 0.246 g of an organic compound gave 0.198 g of CO2 and 0.1014 g of H2O. Determine the percentage composition of C and H in the compound:

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a

29.15 C, 5.48 H

b

21.95 C, 4.58 H

c

51.29 C, 8.54 H

d

21.95 C, 4.85 H

answer is B.

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Detailed Solution

C%=1244=wCO2w×100     =1244×0.1980.246×100=21.95%H%=218×wH2Ow×100             =218×0.10140.246×100=4.58%
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