Question

What is meant by positive deviations from Raoult's law? Give an example. What is the sign of$\triangle_{mix}$H for positive deviation?

Answer 1

hlo mate here is ur ans...

ANSWER

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.

❤❤hope this helps uh dear❤❤

hlo mate here is ur ans...

ANSWER

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.

❤❤hope this helps uh dear❤❤

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