Question

Which pair of species have same percentage of carbon?
(A) \(\mathrm{CH}_{3} \mathrm{COOH}\) and \(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\)
(B) \(\mathrm{CH}_{3} \mathrm{COOH}\) and \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}\)
(C) \(\mathrm{HCOOCH}_{3}\) and \(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\)
(D) \(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\) and \(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\)

Answer 1

\(\mathrm{CH}_{3} \mathrm{COOH}\) and \(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\) pair of species have same percentage of carbon.
Explanation :-
Molecular mass of \(\mathrm{CH}_{3} \mathrm{COOH}=60\)
\(\therefore \%\) of \(\mathrm{C}\) in \(\mathrm{CH}_{3} \mathrm{COOH}=\frac{24}{60} \times 100=40 \%\)
Similarly,
Molecular weight of \(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}=180\)
\(\therefore \%\) of \(\mathrm{C}\) in \(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}=\frac{72}{180} \times 100=40 \%\)

Answer 2

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Answer 3

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