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Byju's Answer
Standard XIII
Chemistry
Concentration Terms
Calculate mol...
Question
Calculate molality of 2.5 g of ethanoic acid
[
C
H
3
C
O
O
H
]
in 75 g of benzene.
A
0.551
m
o
l
k
g
−
1
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B
0.556
m
o
l
k
g
−
1
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C
0.558
m
o
l
k
g
−
1
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D
0.552
m
o
l
k
g
−
1
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Solution
The correct option is
B
0.556
m
o
l
k
g
−
1
MW of
C
H
3
C
O
O
H
=
60
g
m
o
l
−
1
m
=
w
2
×
1000
M
w
2
×
w
1
=
2.5
g
×
1000
60
g
m
o
l
−
1
×
75
g
=
0.556
m
o
l
k
g
−
1
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