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AIIMS 26 May 2019 Evening Question Paper with solutions for online practice
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© examsnet.com
Question : 64
Total: 123
pH of a salt solution of wak acid
(
p
K
a
=
4
)
& weak base
(
p
K
b
=
5
)
at 25ºC is :
6.5
6
7
7.5
Validate
Solution:
p
H
=
1
2
(
p
K
w
+
p
k
a
−
p
k
b
)
=
1
2
(
14
+
4
−
5
)
=
6.5
© examsnet.com
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