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Ionic Equilibrium I
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Buffer solutions and Henderson equation
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Difficulty 1 of 3
ie115
An acetic acid - sodium acetate buffer has
[
CH
X
3
COOH
]
:
[
CH
X
3
COONa
]
=
1
:
10
. Taking
p
K
a
=
4.74
, its pH is
A
3.74
B
5.74
C
4.74
D
6.74
Answer: B
pH =
4.74
+
lo
g
(
10/1
)
=
4.74
+
1
=
5.74
.
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