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Byju's Answer
Standard XII
Chemistry
Conjugate Acids and Bases
9.8g of H2S...
Question
9.8
g
of
H
2
S
O
4
is present in
500
m
L
of the solution. Calculate the pH of the solution.
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Solution
Molarity of
H
2
S
O
4
=
9.8
×
1000
98
×
500
=
0.2
M
As
H
2
S
O
4
is strong acid so it dissociates completely to give
H
+
ions.
H
2
S
O
4
→
2
H
+
+
S
O
2
−
4
0.2
0.2
×
2
0.2
[
H
+
]
=
2
×
0.2
=
0.4
M
p
H
=
−
l
o
g
(
[
H
+
]
)
=
0.3979
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