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Class 12 · Chemistry · Easy
→Why does the vapour pressure of a solution become lower than that of the pure solvent when a non-volatile solute is added?
Class 12 · Chemistry · Easy
→The vapour pressure of a pure solvent is 80 kilopascal and the mole fraction of solvent in the solution is 0.75. What is the partial vapour pressure of the solvent?
Class 12 · Chemistry · Easy
→If the mole fraction of the solvent decreases, what happens to its partial vapour pressure according to Raoult’s law?
Class 12 · Chemistry · Medium
→What is the safest first step while solving vapour-pressure questions based on Raoult’s law?
Class 12 · Chemistry · Easy
→Which option gives the correct relation between vapour pressure and boiling point?
Class 12 · Chemistry · Easy
→A solution has lower vapour pressure than pure solvent. What may this indicate?
Class 12 · Chemistry · Easy
→When the vapour pressure of a liquid is low, what can be said about its tendency to form vapour?
Class 12 · Chemistry · Medium
→If XA increases and XB decreases, what happens to PA and PB in an ideal binary solution?
Class 12 · Chemistry · Medium
→If X_A = 0.5, P_A° = 100 units, X_B = 0.5, and P_B° = 200 units, what is the total vapour pressure?
Class 12 · Chemistry · Easy
→In which case will lowering of vapour pressure be maximum?
Class 12 · Chemistry · Medium
→If actual vapour pressure is lower than expected, what does it indicate about particle behaviour?
Class 12 · Chemistry · Easy
→What is most useful to identify first in a vapour-pressure question?
Class 12 · Chemistry · Medium
→When is the effect of the amount of liquid considered negligible for vapour-pressure comparison?
Class 12 · Chemistry · Easy
→If external pressure is increased, what change is needed to boil the liquid?
Class 12 · Chemistry · Easy
→If a liquid has low vapour pressure, what can be predicted about its boiling point?
Class 12 · Chemistry · Easy
→Why does salt water boil at a higher temperature than pure water?
Class 12 · Chemistry · Medium
→Equal mole amounts of two non-volatile solutes are dissolved separately in water and no dissociation occurs. How will lowering of vapour pressure compare?
Class 12 · Chemistry · Easy
→If the lowering of vapour pressure is greater in a solution, what can generally be inferred about its solute particles?
Class 12 · Chemistry · Easy
→If both components of a binary solution are volatile, which statement about the total vapour pressure is correct?
Class 12 · Chemistry · Easy
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