JEE Mains · Chemistry · STD 11 - 8.3. Organic chemistry purification and characterization
On complete combustion of \(0.492\,g\) of an organic compound containing \(C , H\) and \(O , 0.7938\,g\) of \(CO _{2}\) and \(0.4428\,g\) of \(H _{2} O\) was produced. The \(\%\) composition of oxygen in the compound is \(........\)
- A \(46\)
- B \(44\)
- C \(43\)
- D \(42\)
Answer & Solution
Correct Answer
(A) \(46\)
Step-by-step Solution
Detailed explanation
\(0.492\,g\) of \(C _{ x } H _{ y } O _{z}\) Gives \(0.7938\,g\,CO _{2}=0.018\) moles \(0.4428\,g\,H _{2} O =0.0246\) moles So moles of \(C =0.018 \Rightarrow 0.216\,g\) Moles of \(H =0.049 \Rightarrow 0.049\,g\) \(\therefore\) wt. of Oxygen \(=0.492-0.216-0.049\) \(\%\) of…
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