Question

Ethanol can be prepared more easily by which reaction ?
(i) CH₃CH₂Br + H₂O → CH₃CH₂OH
(ii) CH₃CH₂Br + Ag₂O (in boiling water)
→ CH₃CH₂OH
(a) by (i) reaction
(b) by (ii) reaction
(c) Both reactions proceed at same rate
(d) by none

Answer 1

The easiest way to prepare ethanol is from ethyl bromide.

Option (1) is correct.

Explanation:

• Ethanol can be prepared easily from Ethyl bromide.
• As ethyl bromide can be prepared from ethanol and bromine.
• Then ethyl bromide is distilled over and washed.
• First with dilute sodium carbonate solution and then several times with distilled water.

The reaction is given below.

CH₃CH₂Br + H₂O → CH₃CH₂OH

Finally, ethyl bromide is dried with calcium chloride and re-distilled yielding colorless heavy liquid boiling at 38° C.

The easiest way to prepare ethanol from ethyl bromide.

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