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Class 11 NEET Chemistry Equilibrium Questions Part 1
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© examsnet.com
Question : 41
Total: 100
What is the
[
O
H
−
]
in the final solution prepared by mixing 20.0 mL of 0.050 M HCl with 30.0 mL of 0.01 M
B
a
(
O
H
)
2
(2009)
0.40M
0.0050 M
0.12 M
0.10 M
Validate
Solution:
Millimoles of
H
+
produced
=
20
×
0.05
=
1
Millimoles of
O
H
−
produced
=
30
×
0.1
×
2
=
6
(∵Each
B
a
(
O
H
)
2
gives
2
O
H
−
)
∴ Millimoles of
O
H
−
remaining in solution
=
6
−
1
=
5
Total volume of solution
=
20
+
30
=
50
mL
∴
[
O
H
−
]
=
5
50
=
0.1
M
© examsnet.com
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