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Class 12 NEET Chemistry Solutions Questions
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© examsnet.com
Question : 60
Total: 76
A
5
%
solution of cane sugar (mol. wt.
=
342
) is isotonic with
1
%
solution of a substance
X
.
The molecular weight of
X
is
(1998)
68.4
171.2
34.2
136.8
Validate
Solution:
Cane
Sugar
X
W
1
=
5
g
W
2
=
1
g
V
1
=
100
mL
V
2
=
100
mL
=
0.1
L
=
0.1
L
M
1
=
342
M
2
=
?
For isotonic solutions,
C
1
=
C
2
W
1
M
1
V
1
=
W
2
M
2
V
2
⇒
5
342
×
0.1
=
1
M
2
×
0.1
⇒
M
2
=
342
5
=
68.4
© examsnet.com
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