First slide

Colligative properties, Lowering of vapour pressure (LVP)

Question

Which solution has the highest vapour pressure?

Easy

A

0.02 M NaCl at 50^o
B

0.03 M sucrose at 15^oC
C

0.005 MCaCI₂ at 50^oC
D

0.005 M CaCl₂ at 25^oC

Solution

For high v. pr. concentration of solute should be low and temperature should be high.

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