Solutions Question 321
Question: 12 g of urea is dissolved in 1 litre of water and 68.4 g of sucrose is dissolved in 1 litre of water. The lowering of vapour pressure of first case is
Options:
A) equal to second
B) greater than second
C) less than second
D) double that of second
Show Answer
Answer:
Correct Answer: A
Solution:
Moles of urea $ =\frac{12}{60}=0.2 $ Moles of sucrose $ =\frac{68.4}{342}=0.2 $ Both are non electrolyte hence lowering of V.P. will be same.
