Question

On mixing $10\,\,mL$ of carbon tetrachloride with $10\,\,mL$ of benzene the total volume of the solution is :
A) $> 20\,mL$
B) $< 20\,mL$
C) $= 20\,mL$
D) Cannot be predicted

Answer 1

In order to answer this question, you must be aware of the concept of Intermolecular forces of attraction and polarisation nature of both the given compounds and there is no need to make any kind of calculations. You can directly answer it, if you know their properties.

Complete answer:
Step 1: In this step we will discuss about the force of attraction between the molecules of the given compounds:
As we know that, both Benzene and Carbon Tetrachloride are non-polar in nature due to which there is no possibility of any kind of interaction or reaction between these molecules and hence they do not affect each other when present in a container together.
Step 2: In this step we will conclude our answer:
From the previous step, we can conclude that on mixing $10\,\,mL$ of carbon tetrachloride with $10\,\,mL$ of benzene the total volume of the solution is $20\,\,mL$. As there are no changes in intermolecular forces as both carbon tetrachloride and benzene are non-polar. And hence they will not react to form any kind of product.

And hence, the correct answer is Option C.

Note: Intermolecular forces (IMF) are the forces which mediate interaction between atoms, including forces of attraction or repulsion which act between atoms and other types of neighboring particles, e.g. atoms or ions. Intermolecular forces are weak relative to intramolecular forces – the forces which hold a molecule together. For example, the covalent bond, involving sharing electron pairs between atoms, is much stronger than the forces present between neighboring molecules.