Solutions Question 62

Question: The amount of urea to be dissolved in 500 ml of water (K =18.6 K mole1 in 100g solvent) to produce a depression of 0.186oC in freezing point is [MH CET 2000]

Options:

A) 9 g

B) 6 g

C) 3 g

D) 0.3 g

Show Answer

Answer:

Correct Answer: C

Solution:

ΔTf=100×K×wm×W
,0.186=100×18.6×w60×500

w=3g



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