Question

Assertion (A) $7.5g$ of ethoxyethane and $9g$ of butan-1-ol is miscible to almost same extent while pentane is essentially immiscible with water.
Reason (R) Alcohols and ethers can form hydrogen bonds with the water molecule.

• A. Both A and $R$ are correct; $R$ is the correct explanation of $A$.
• B. Both A and $R$ are correct; $R$ is not the correct explanation of $A$.
• C. $A$ is correct; $R$ is incorrect.
• D. $R$ is correct; $A$ is incorrect.

Answer 1

Answer: (A)

Ethoxyethane and butan-$1$-ol are miscible to almost the same extent, i.e. $7.5$ and $9gper100mL$ of water respectively while pentane is essentially immiscible with water. This is due to the fact that oxygen of either can form the hydrogen bond with the water molecule.