Two liquids A and B on mixing produce a warm solution. Which type of deviation from Raoult's law does it show?
Answers
Answered by
197
As the heat is evolved, the enthalpy change is negative. It must be exothermic and also shows negative deviation from raoult's law.
Reason for negative deviation: The intermolecular forces between A-A and B-B are weaker than those between A-B. So, when u mix these kind of solutions, heat will be released and also it leads to decrease in vapour pressure.
Reason for negative deviation: The intermolecular forces between A-A and B-B are weaker than those between A-B. So, when u mix these kind of solutions, heat will be released and also it leads to decrease in vapour pressure.
Answered by
37
On mixing A and B , the solution becomes warm.
This means heat released in formation of new bonds between A and B molecules is more than the heat absorbed for the breaking of molecules of A and B .
Therefore , the vapour pressure of the solution is reduced and thus the mixture shows negative deviation from Roult's law .
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