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  • Explain the terms ideal and non-ideal solutions in the light of forces of interactions operating between molecules in liquid solutions.

Explain the terms ideal and non-ideal solutions in the light of forces of interactions operating between molecules in liquid solutions.

Answers (2)

Ideal solutions: They obey Raoult’s law irrespective of the concentration. For an ideal solution,

\Delta _{mix}H=0, \Delta _{mix}V=0

\text{A-B interactions}\approx \text{A-A interactions and B-B interactions}

Non-ideal solutions: They don’t follow Raoult’s law over the entire range of concentration

Positive deviations: Vapour pressure is higher than the calculated values

\Delta _{mix}H=+ve, \Delta _{mix}V=+ve

A-B interactions < A-A interactions and B-B interactions

Negative deviations: Vapour pressure is lower than the calculated values

\Delta _{mix}H=-ve, \Delta _{mix}V=-ve

A-B interactions>A-A interactions and B-B interactions

Posted by

infoexpert24

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Define Ideal solution and Non Ideal solution

 

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Ritesh Kumar

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