Question

Which of the following are correct statement about \[{C_2}{H_5}Br\]
The question has multiple correct options:
A. It reacts with metallic Na to give ethane.
B. It gives nitroethane on heating with aqueous ethanolic solution of \[AgN{O_2}\].
C. It gives \[{C_2}{H_5}OH\] on boiling with alcoholic potash.
D. It forms ethyl acetate on heating with silver acetate.

Answer 1

Hint: The chemical name of \[{C_2}{H_5}Br\] is bromoethane. Bromoethane is an example of mono-alkane. Alcoholic potash is an alcoholic solution of potassium hydroxide.

Complete Step by Step Solution:
A. Bromoethane reacts with metallic sodium in presence of dry ether to form butane.
The reaction of bromoethane with metallic sodium is shown below:
\[2{C_2}{H_5}Br + 2Na \to C{H_3}C{H_2}C{H_2}C{H_3} + 2NaBr\]
In the above reaction, two mole bromoethane reacts with sodium metal in presence of dry ether to form one mole of butane and two mole of sodium bromide.

B. Bromoethane on heating with aqueous ethanolic solution of \[AgN{O_2}\]gives nitroethane.
The reaction of bromoethane with alcohol \[AgN{O_2}\]is shown below:
\[{C_2}{H_5}Br + alc.AgN{O_2} \to {C_2}{H_5} - N{O_2} + AgBr\]
In the above reaction, bromoethane reacts with alcoholic silver nitrite to form nitroethane and silver bromide.

C. Bromoethane on boiling with alcoholic potash gives alkene.
The reaction of bromoethane with alcoholic potash is shown below:
\[C{H_3}C{H_2}Br + alc.KOH \to C{H_2} = C{H_2} + HBr\]
In the above reaction, bromoethane on heating with alcoholic potassium hydroxide gives ethene and hydrogen bromide.

D. Bromoethane on heating with silver acetate gives ethyl acetate.
The reaction of bromoethane and silver acetate is shown below:
\[{C_2}{H_5}Br + C{H_3}COOAg \to C{H_3} - COO - {C_2}{H_5} + AgBr\]
In the above reaction bromoethane reacts with silver acetate to form ethyl acetate and silver bromide.
Therefore, option B and D are correct.

Note: It should be noted that it has more than one answer correct. The reaction of bromoethane with metallic sodium in presence of dry ether is an example of Wurtz reaction.