JEE Mains · Chemistry · STD 11 - 8.3. Organic chemistry purification and characterization
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 \(\mathrm{C}: 12, \mathrm{O}: 16\))
- A 14
- B 16
- C 12
- D 10
Answer & Solution
Correct Answer
(C) 12
Step-by-step Solution
Detailed explanation
Organic compound \(\xrightarrow[\Delta]{\mathrm{CuO}} \mathrm{CO}_2+\mathrm{H}_2 \mathrm{O}\) \(\begin{aligned} & \mathrm{n}_{\mathrm{CO}_2}=\frac{220 \times 10^{-3}}{44}=5 \times 10^{-3} \mathrm{moles} \\ & \mathrm{m}_{\mathrm{C}}=5 \times 10^{-3} \times 12\end{aligned}\)…
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