📝 Multiple Choice Question
General-science
0.25 g of an organic compound gave 0.20 gof CO2 after complete combustion. The percentage composition of carbon is .
A
80.00%
B
78.18%
C
21.82%
D
4.60%
Explanation
Using Liebig's method for elemental analysis, the carbon in the sample is entirely converted to CO2. Since carbon makes up 12/44 of the mass of CO2, the absolute carbon content in the original 0.25 g sample mathematically calculates to 21.82%.
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