First slide

Theory of dilute solutions

Question

1 mole of urea is dissolved in 1 kg of each of solvent A, B,C and D seperately and different solutions are prepared.
Solvent Solution Boiling point (K)
A I T_p
B II T_q
C III T_x
D IV T_y
Boiling point order is T_q<T_y <T_p <T_x . Identify the correct statement(s). Assume boiling points of solvents are almost same.

Moderate

A

K_b of solvent A is greater than K_b of solvent D
B

K_b of solvent D is greater than K_b of solvent B
C

K_b of solvent A is greater than K_b of solvent C
D

K_b of solvent C is greater than K_b of solvent A,B and D

Solution

T_b = $T_{b}^{0}$ + k_b m
Since $T_{b}^{0}$ and m is same higher the value of T_b,higher will be k_b

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