Question

With ethoxyethane which compound is miscible to almost the same extent?
A) Formaldehyde
B) Butanone
C) Butan-1-ol
D) Propan-1-ol

Answer 1

Hint: The answer to this question is based on the general concepts in organic chemistry which is dependent on the fact that ethers are miscible with alcohol which have the same molecular mass as them. This will lead you to the correct answer.

Complete answer:
We have come across the concepts of organic chemistry which gives us the information on miscibility, reactivity and many other parameters.
Let us first understand the meaning of miscibility which will help us to approach the required answer.
- Miscibility is the property of the two substances to mix in all the proportions which forms a homogeneous solution and this term is mostly applied to the liquids but also applies to solids as well as gases.
- Ethoxyethane is the other name for the ether known as diethyl ether or simply ether which is also abbreviated as $E{{t}_{2}}O$
- Ethoxyethane is commonly used in the laboratories as the solvent.
- Now, this ether is miscible with the other liquid which has the same molecular mass to form equal proportions of both liquids. Ether mix with alcohol and water because they do not form hydrogen bonds.
Molecular mass of ethoxyethane is 74.12 g/mol and that of the alcohol that is butan-1-ol is also 74.12g/mol whereas that of propan-1-ol is 60.09g/mol.
Therefore, butan-1-ol is miscible almost to the same extent as that of ethoxyethane.

Thus, the correct answer is option C) Butan-1-ol.

Note: Note that solubility and miscibility are two different terms where solubility gives the measure of ability of a solute dissolve in a liquid solvent whereas miscible is the term used more often for liquids which is the ability of two liquids to mix together in equal proportions.