Published by:
CGP EDU Academic Team
Published on: August 13, 2026
An aqueous solution is 1.00 molal in 
. Which change will cause the vapour pressure of the solution to increase?
A
Addition of 
B
Addition of 
C
Addition of 1.00 molal KI
D
Addition of water
Text Solution
Verified by ExpertsThe correct answer is:
D
Addition ofwater to an aqueous solution of KI causes the concentration of the solution to decrease thereby increasing the vapour pressure. In the other three options the electrolytes undergo ionization, which leads to lowering ofvapour pressure.
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