Raoult's law states that 'the equilibrium vapor pressure that is exerted by a component in a solution is proportional to the mole fraction of that component'. This generalisation is based on the assumption that the________________?
Correct answer: E. All A., B. & C.
- A. Sizes of the component molecules are approximately equal
- B. Attractive forces between like and unlike molecules are approximately equal
- C. Component molecules are non-polar and no chemical combination or molecular association
- D. between unlike molecules takes place in the formation of the solution
- E. All A., B. & C.
Explanation
Raoult's law describes an ideal solution, in which like and unlike molecular attractions are nearly equal and the components have similar molecular behaviour. The listed conditions A, B and C collectively represent the assumptions behind this idealisation.
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