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Get Answers to all your Questions
Give reasons :
- A decrease in temperature is observed on mixing ethanol and acetone.
- Potassium chloride solution freezes at a lower temperature than water.
Answers (1)
(a) Ethanol & acetone forms a non-ideal solution showing positive deviation which is accompanied by absorption of heat and a slight increase in volume, whats why a decrease in temperature is observed.
(b) Potassium chloride solution freezes at a lower temperature than water because the vapour pressure of the solution is less than that of pure solvent, hence the freezing point decreases.
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