Which of the following reactions has the highest atom economy assuming that the…

CHEMISTRY · Single correct · A Level · Chemistry · Organic synthesis · Organic synthesis

Problem

Which of the following reactions has the highest atom economy assuming that the organic compound is the only useful product formed? (1) C2H5Br+NaOH→C2H5OH+NaBr\text{C}_2\text{H}_5\text{Br} + \text{NaOH} \rightarrow \text{C}_2\text{H}_5\text{OH} + \text{NaBr} (2) C2H4+H2O→C2H5OH\text{C}_2\text{H}_4 + \text{H}_2\text{O} \rightarrow \text{C}_2\text{H}_5\text{OH} (3) C2H5OH→C2H4+H2O\text{C}_2\text{H}_5\text{OH} \rightarrow \text{C}_2\text{H}_4 + \text{H}_2\text{O} (4) C2H5OH+HCOOH→C2H5OOCH+H2O\text{C}_2\text{H}_5\text{OH} + \text{HCOOH} \rightarrow \text{C}_2\text{H}_5\text{OOCH} + \text{H}_2\text{O}

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