What is meant by positive deviation from raoult's law? Give an example. What is the sign of delta mix h for positive deviation?
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Positive Deviation from Raoult's Law occurs when the vapour pressure of the component is greater than what is expected in Raoult's Law. For Example, consider two components A and B to form non-ideal solutions.
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hlo mate here is ur ans...
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Positive deviation from Rauolt's law means that the observed vapour pressure is greater than expected and It occur when A-B attractions are weaker than the average of the attraction in the pure component of the mixture. For example, a mixture of ethnol and ecetone show a positive deviation from Rault's law.
In case of solutions showing positive deviations, absorption of heat takes place, i.e., Δ mix H has a positive (+) sign.
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