JEE Mains · Chemistry · STD 11 - 1. Some basic concept of chemistry
Complete combustion of \(1.80 \,g\) of an oxygen containing compound \(\left( C _{ x } H _{ y } O _{2}\right)\) gave \(2.64\, g\) of \(CO _{2}\) and \(1.08\, g\) of \(H _{2} O .\) The percentage of oxygen in the organic compound is
- A \(51.63\)
- B \(63.53\)
- C \(53.33\)
- D \(50.33\)
Answer & Solution
Correct Answer
(C) \(53.33\)
Step-by-step Solution
Detailed explanation
\(n _{ c }= n _{ co _{2}}=\frac{2.64}{44}=0.06\) \(n _{ H }=2 \times n _{ H _{2} O }=\frac{1.08}{18} \times 2=0.12\) \(m _{0}=1.80-12 \times \frac{2.64}{44}-\frac{1.08}{18} \times 2\) \(=1.80-0.72-0.12=0.96 gm\) \(\% 0=\frac{0.96}{1.80} \times 100=53.33 \%\)
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