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Class 12 · Chemistry
→If the vapour pressure of a solution is 75% of the vapour pressure of the pure solvent, what is the mole fraction of the solvent?
Class 12 · Chemistry
→The vapour pressure of pure solvent is 120 and the mole fraction of solvent is 0.8. What is the vapour pressure of the solution?
Class 12 · Chemistry
→If the amount of non-volatile solute in a solution is increased, what happens to the solvent vapour pressure?
Class 12 · Chemistry
→What is the most direct reason for lowering of solvent vapour pressure in an ideal solution?
Class 12 · Chemistry
→What is the first useful identification in vapour-pressure questions?
Class 12 · Chemistry
→Which condition should be kept the same while comparing vapour pressures of a solution and pure solvent?
Class 12 · Chemistry
→In a graph related to vapour pressure, if the line rises with temperature, what does it mean?
Class 12 · Chemistry
→Lower vapour pressure of a solution helps explain which everyday observation?
Class 12 · Chemistry
→If the vapour pressure of the pure solvent is 200 units and the mole fraction of the solvent is 0.75, what is the vapour pressure of the solution?
Class 12 · Chemistry
→If the mole fraction of the solute is 0.1, what is the mole fraction of the solvent in a binary solution?
Class 12 · Chemistry
→For a solution containing a non-volatile solute, if the relative lowering of vapour pressure is 0.25, what is the mole fraction of the solute?
Class 12 · Chemistry
→Why do both mole fraction and vapour pressure of solvent decrease when a non-volatile solute is added?
Class 12 · Chemistry
→If both components in a solution are volatile, which statement is more correct?
Class 12 · Chemistry
→If an ideal solution has a decreasing mole fraction XA, what happens to the partial vapour pressure PA at constant temperature?
Class 12 · Chemistry
→Why is vapour pressure in a closed vessel considered an example of dynamic equilibrium?
Class 12 · Chemistry
→Adding salt lowers the vapour pressure of water. With which property is this most closely related?
Class 12 · Chemistry
→If external pressure is increased, what is needed for a liquid to boil?
Class 12 · Chemistry
→If the external pressure is decreased, what happens to the boiling temperature of a liquid?
Class 12 · Chemistry
→The vapour pressure of a volatile liquid increases with temperature. What is the correct particle-level reason?
Class 12 · Chemistry
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