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Byju's Answer
Standard XII
Chemistry
pH the Power of H
Calculate the...
Question
Calculate the pH of a solution obtained by mixing 0.1 litre of pH=4 and 0.2 litre of pH=10.
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Solution
If pH is 4 it means it is a weak acid and if pH is 10 it's a strong Base
Acid-Base,
Given,
V
a
=
100
m
L
,
V
b
=
200
m
L
N
a
=
10
−
4
,
N
b
=
10
−
4
N=vbnb-vana/va+vb
N
=
V
b
N
b
−
V
a
N
a
V
a
+
V
b
=
200
×
10
−
4
−
100
×
10
−
4
300
`
=
0.3
×
10
−
4
By applying log we will get pOH=4.5229
As we know pH+pOH=14
Then,
p
H
=
9.4771
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