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Question
Chemistry
18 gram glucose (Molar mass = 180) is dissolved in 100 ml of water at 300 K. If R = 3 0.0821 L-atm mol-1 K-1 what is the osmotic pressure of solution ?
Q.
18
gram glucose (Molar mass
=
180
) is dissolved in
100
m
l
of water at
300
K
. If
R
=
3
0.0821
L
−
a
t
m
m
o
l
−
1
K
−
1
what is the osmotic pressure of solution ?
2106
206
MHT CET
MHT CET 2019
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A
2.463
a
t
m
B
24.63
a
t
m
C
8.21
a
t
m
D
0.821
a
t
m
Solution:
The various quantities known to us are as follows:
R
=
0.0821
L
- atm mol
−
1
K
−
1
w
2
=
18
gram
Molar mass
(
M
2
)
=
180
T
=
300
K
V
=
100
m
L
To calculate the osmotic pressure of solution, we use the following formula,
π
=
M
2
V
w
2
RT
=
180
×
100
18
×
0.0821
×
300
×
1000
=
24.63
atm