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Prepare a 0.2M solution of potassium chloride (KCl) (14.92g/l)
To 25cm
3
of this solution add the volume of 0.2M HCl shown in the table and make up to 100cm
3
with water
pH at 25°C
Volume of 0.2M HCl added (cm
3
)
1.0
67.0
1.1
52.8
1.2
42.5
1.3
33.6
1.4
26.6
1.5
20.7
1.6
16.2
1.7
13.0
1.8
10.2
1.9
8.1
2.0
6.5
2.1
5.1
2.2
3.9
Bower & Bates, J. Res. natn. Bur. Stand. 55, 197 (1955)
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