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Ionic Equilibrium I
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pH of strong and weak acids and bases, mixtures
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Single correct option
Difficulty 1 of 3
ie060
The pH of a
0.005
M
solution of
H
X
2
SO
X
4
at 298 K, assuming complete ionisation of both protons, is
A
2.30
B
2
C
3
D
1.70
Answer: B
Complete ionisation gives
[
H
X
+
]
=
2
×
0.005
=
0.01
M
, so
pH
=
2
. Taking only one proton (
0.005
M
) would give 2.30, which is wrong here.
Practice Ionic Equilibrium I
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