An organic compound weighing 500 mg , produced 220 mg of $\mathrm{CO}_2$ . on complete combustion. The percentage composition of carbon in the compound is _____ \%. (nearest integer)
(Given molar mass in $\mathrm{g} \mathrm{mol}^{-1}$ of $\mathrm{C}: 12, \mathrm{O}: 16$ )

Question

An organic compound weighing 500 mg , produced 220 mg of

\mathrm{CO}_2

. on complete combustion. The percentage composition of carbon in the compound is _____ \%. (nearest integer)
(Given molar mass in

\mathrm{g} \mathrm{mol}^{-1}

of

\mathrm{C}: 12, \mathrm{O}: 16

)

Quantrex Academy · Accepted Answer

Correct answer: 0

Organic compound [Δ] CuO CO_2+H_2 O aligned & n_ CO_2 = 220 × 10^ -3 44 =5 × 10^ -3 moles & m_ C =5 × 10^ -3 × 12 aligned \% ~m carbon = 5 × 10^ -3 × 12 500 × 10^ -3 × 100=12 \% Correct answer is 12

An organic compound weighing 500 mg , produced 220 mg of CO_2 . on...

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