A binary liquid solution is prepared by mixing n-heptane
and ethanol. Which one of the following statements is correct
regarding the behaviour of the solution?
(a) The solution is non-ideal, showing – ve deviation from
Raoult’s Law.
(b) The solution is non-ideal, showing + ve deviation from
Raoult’s Law.
(c) n-heptane shows + ve deviation while ethanol shows
– ve deviation from Raoult’s Law.
(d) The solution formed is an ideal solution.
Answers
Answered by
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The solution shows +ve deviation from Raoult's law.
The correct option is (B).
Explanation:
As per the question statement the solution is a mixture of n-heptane and ethanol.
- (A) n-heptane which is a Non polar compound.
- (B) Ethanol is a Polar compound.
When we will mix both liquids then the actual force of attraction of (A - A ) and (B - B ) will be weak than the mixture.
A - B < A - A , B - B
However this case shown +ve deviation from Raoult's law.
Hence the solution shows +ve deviation from Raoult's law.
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