MHT CET · Chemistry · Environmental Chemistry
Which from following reactions exhibits good atom economy according to the principles of green chemistry?
- A \(\mathrm{C}_4 \mathrm{H}_9 \mathrm{OH}+\mathrm{NaBr}+\mathrm{H}_2 \mathrm{SO}_4 \longrightarrow\)\(\ \mathrm{C}_4 \mathrm{H}_9 \mathrm{Br}+\mathrm{NaHSO}_4+\mathrm{H}_2 \mathrm{O}\)
- B \(\mathrm{C}_2 \mathrm{H}_4+\mathrm{H}_2 \xrightarrow{\mathrm{Ni}} \mathrm{C}_2 \mathrm{H}_6\)
- C \(\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}+\mathrm{C}_2 \mathrm{H}_5 \mathrm{COOH} \longrightarrow\) \(\mathrm{C}_2 \mathrm{H}_5 \mathrm{COOC}_2 \mathrm{H}_5+\mathrm{H}_2 \mathrm{O}\)
- D \(\mathrm{C}_4 \mathrm{H}_9 \mathrm{OH}+\mathrm{SOCl}_2 \xrightarrow{\Delta}\) \(\mathrm{C}_4 \mathrm{H}_9 \mathrm{Cl}+\mathrm{HCl}+ \ \mathrm{SO}_2\)
Answer & Solution
Correct Answer
(B) \(\mathrm{C}_2 \mathrm{H}_4+\mathrm{H}_2 \xrightarrow{\mathrm{Ni}} \mathrm{C}_2 \mathrm{H}_6\)
Step-by-step Solution
Detailed explanation
\(\mathrm{C}_2 \mathrm{H}_4+\mathrm{H}_2 \xrightarrow{\mathrm{Ni}} \mathrm{C}_2 \mathrm{H}_6 \)
\( \text {Atom economy }=\frac{\text {Mol. wt of} \mathrm{C}_2 \mathrm{H}_6}{\text {Mol.wt of}\left(\mathrm{C}_2 \mathrm{H}_4+\mathrm{H}_2\right)} \times 100 \)
\( =\frac{30}{30} \times 100=100 \%\)
\( \text {Atom economy }=\frac{\text {Mol. wt of} \mathrm{C}_2 \mathrm{H}_6}{\text {Mol.wt of}\left(\mathrm{C}_2 \mathrm{H}_4+\mathrm{H}_2\right)} \times 100 \)
\( =\frac{30}{30} \times 100=100 \%\)
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