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Factors Affecting Vapour Pressure

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What does the following statement mean? "A liquid having weaker interparticle forces has higher vapour pressure."

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Q. Which of the liquids in each of the following pairs has a higher vapour pressure?

Liquid a has higher vapour pressure than liquid b. Which liquid out of a and b will have lower boiling point.

Q. Correct the following statements.

a) Water boils at

100^{0} C

under atmospheric pressure.
b) The liquid evaporates above its boiling point.
c) Solids have the largest interparticle space.
d) Gases have the strongest interparticle forces.

Q. Pick out the wrong statement(s).
(i) Vapour pressure of a liquid is the measure of the strength of intermolecular attractive forces.
(ii) Surface tension of a liquid acts perpendicular to the surface of the liquid.
(iii) Vapour pressure of all liquid is same at their freezing points.
(iv) Liquids with stronger intermolecular attractive forces are more viscous than those with weaker intermolecular force.

Q. Two liquids A & B are mixed together to form a solution in which A - B attractive forces are weaker than A-A & B-B attractive forces. What will be the vapour pressure of the solution?

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Factors Affecting Vapour Pressure

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