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JEE Main 2013 Question Paper
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© examsnet.com
Question : 4
Total: 90
The molarity of a solution obtained by mixing
750
m
L
of
0.5
(M)
H
C
l
with
250
m
L
of
2
(
M
)
H
C
l
will be:
1.00 M
1.75 M
0.975 M
0.875 M
Validate
Solution:
The formula for molarity of mixture of two substance is
=
M
1
V
1
+
M
2
V
2
V
1
+
V
2
Here
M
1
=
0.5
,
V
1
=
750
,
M
2
=
2
,
V
2
=
250
∴
Molarity of mixture
=
0.5
×
750
+
2
×
250
750
+
250
=
375
+
500
1000
=
875
1000
=
0.875
© examsnet.com
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