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Ionic Equilibrium I
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Buffer solutions and Henderson equation
JEE Main level
Numerical answer
Difficulty 2 of 3
ie138
A buffer has 0.09 M acetic acid and 0.20 M sodium acetate. Taking
p
K
a
=
4.74
, find its pH to two decimal places.
Numerical answer type, tolerance 0.01.
Answer: 5.0868
pH =
4.74
+
lo
g
(
0.20/0.09
)
=
4.74
+
0.347
=
5.09
.
Practice Ionic Equilibrium I
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