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Class 12 · Chemistry · Easy
→In an ideal solution, the partial pressure of component A is 24 kPa and the total pressure is 60 kPa. What is the mole fraction of A in the vapour phase?
Class 12 · Chemistry · Easy
→Why is the vapour phase richer in the more volatile component in a volatile liquid mixture?
Class 12 · Chemistry · Easy
→Why is equilibrium vapour pressure considered independent of the amount of liquid if some liquid remains in the vessel?
Class 12 · Chemistry · Easy
→What is the main reason for the increase in vapour pressure of a pure liquid when temperature increases?
Class 12 · Chemistry · Easy
→In which situation can the vapour pressure of a solution equal that of the pure solvent?
Class 12 · Chemistry · Easy
→Which statement correctly expresses the idea of Raoult’s law?
Class 12 · Chemistry · Medium
→In an ideal solution, the pure vapour pressures of components A and B are 150 kPa and 50 kPa, respectively. If the liquid-phase mole fraction of A is 0.25, what is the total pressure?
Class 12 · Chemistry · Easy
→A liquid has a higher vapour pressure than another liquid at the same temperature. Which statement about the first liquid is most appropriate?
Class 12 · Chemistry · Easy
→When a non-volatile solute is added to a solvent, why does the solvent vapour pressure decrease at molecular level?
Class 12 · Chemistry · Medium
→A solution has a mole fraction of 0.15 for a non-volatile solute. The vapour pressure of the pure solvent is 80 kPa. What is the lowering of vapour pressure?
Class 12 · Chemistry · Easy
→In an ideal binary solution, both components A and B are volatile. How is the total vapour pressure calculated?
Class 12 · Chemistry · Easy
→If the total vapour pressure of a liquid mixture is lower than the ideal value, which conclusion is correct?
Class 12 · Chemistry · Easy
→When the actual vapour pressure of a solution is higher than its ideal value, what type of molecular attraction is indicated?
Class 12 · Chemistry · Easy
→The vapour pressure of a pure solvent is 100 kPa and that of its solution is 82 kPa. What is the relative lowering of vapour pressure?
Class 12 · Chemistry · Easy
→In an ideal solution, the vapour pressure of the pure solvent is 90 kPa and the mole fraction of solvent is 0.70. What will be the vapour pressure of the solution?
Class 12 · Chemistry · Medium
→Which statement about vapour pressure and rate of evaporation is most correct?
Class 12 · Chemistry · Easy
→If total vapour pressure of a mixture is higher than the value predicted by Raoult's law, what molecular behaviour is likely?
Class 12 · Chemistry · Easy
→The vapour pressure of a solution is 12 percent lower than that of pure solvent. Assuming a non-volatile solute, what is the mole fraction of solute?
Class 12 · Chemistry · Easy
→Which option gives a correct unit of vapour pressure?
Class 12 · Chemistry · Easy
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