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AIEEE 2003 Chemistry Solved Paper
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© examsnet.com
Question : 2
Total: 76
25
ml
of a solution of barium hydroxide on titration with a
0.1
molar solution of hydrochloric acid gave a litre value of
35
ml
. The molarity of barium hydroxide solution was
0.14
0.28
0.35
0.07
Validate
Solution:
Ba
(
OH
)
2
+
2
HCl
(
aq
)
→
BaCl
2
(
aq
)
+
2
H
2
O
(
l
)
Assume molarity of
Ba
(
OH
)
2
=
M
No of moles of
Ba
(
OH
)
2
present
=
25
×
M
No of moles of
HCl
present
=
35
×
0.1
Stoichiometric coefficient of
Ba
(
OH
)
2
=
1
Stoichiometric coefficient of
HCl
=
2
∴
25
×
M
1
=
35
×
0.1
2
⇒
M
=
0.07
© examsnet.com
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