0.5 g of an organic compound on combustion gave 1.46 g of and 0.9 g of . The percentage of carbon in the compound is . (Nearest integer)

[Given: Molar mass (in g mol⁻¹) C: 12, H: 1, O: 16]

Question

0.5 g of an organic compound on combustion gave 1.46 g of  and 0.9 g of . The percentage of carbon in the compound is . (Nearest integer)

[Given: Molar mass (in g mol⁻¹) C: 12, H: 1, O: 16]

Canvas Classes · Accepted Answer

Strategy:
 Carbon in an organic compound is quantitatively converted to  during combustion. Use the mass of  produced to determine the mass of Carbon in the original sample and then express it as a percentage.

Step 1: Calculate mass of Carbon
Molar mass of . Atomic mass of .

Step 2: Calculate percentage

Rounding to the nearest integer gives 80.

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