The intermolecular forces between benzene molecules are approximately equal in strength to those between toluene molecules. For a benzene + toluene mixture, identify the incorrect statement(s):
| (a) | ΔHmix= Zero |
| (b) | ΔVmix = Zero |
| (c) | The mixture forms a minimum-boiling azeotrope |
| (d) | The mixture does not behave as an ideal solution |
Which option lists the incorrect statements?
| 1. | a and b | 2. | b and c |
| 3. | c and d | 4. | a and d |
The solution that follows Raoult’s law is known as the ideal solution. For an ideal solution, intermolecular forces between two benzene molecules are nearly the same strength as those between two toluene molecules. For an ideal solution, ΔVmix = 0 and ΔHmix = 0 Thus, the mixture of benzene and toluene is an example of an ideal solution, so statements c and d are incorrect. Hence, the correct option is the third option. |
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