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Tardigrade
Question
Chemistry
Elevation in the boiling point for 1 molal solution of glucose is 2 K. The depression in the freezing point of 2 molal solutions of glucose in the same solvent is 2 K. The relation between Kb and Kf is:
Q. Elevation in the boiling point for
1
molal solution of glucose is
2
K
. The depression in the freezing point of
2
molal solutions of glucose in the same solvent is
2
K
. The relation between
K
b
and
K
f
is:
3246
231
JEE Main
JEE Main 2019
Solutions
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A
K
b
=
0.5
K
f
15%
B
K
b
=
2
K
f
61%
C
K
b
=
1.5
K
f
11%
D
K
b
=
K
f
13%
Solution:
Δ
T
f
Δ
T
b
=
i
×
m
×
k
f
i
.
m
×
k
b
2
2
=
1
×
2
×
k
f
1
×
1
×
k
b
k
b
=
2
K
f