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Manipal Entrance Test 2013 Chemistry Paper
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© examsnet.com
Question : 56
Total: 60
Determine the pH of 0.024 M hydroxylamine hydrochloride solution. (
K
b
of hydroxyl amine is 10
−
8
).
8.4
6.2
3.8
5.6
Validate
Solution:
HO
+
N
H
3
+
H
2
O
⇌
HONH
3
OH
+
H
+
K
h
=
K
w
k
b
=
10
−
14
10
−
8
=
10
−
6
[
H
+
]
=
√
K
h
C
=
√
10
−
6
×
0.024
=
1.5
×
10
−
4
and pH = 3.8
© examsnet.com
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