Question
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?
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The solution formed is an ideal solution
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The solution is non-ideal, showing +ve deviation from Raoult’s law.
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The solution is non-ideal, showing –ve deviation from Raoult’s law.
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n-heptane shows +ve deviation while ethanol shows –ve deviation from Raoult’s law.
Solution
B.
The solution is non-ideal, showing +ve deviation from Raoult’s law.
On mixing n-heptane and ethanol; strong interactions are replaced by weak interaction and hence it kes non-ideal solution with positive deviation.
