Table 1.

The effect of dilution on the titration of a strong acid in aqueous Na₂HPO₄ solution.

HCl	Alkali consumption mL
added mL	End point set by device	% error	at pH 9.20	% error	Corrected*	% error	Recovery**(%)
0.50	1.3157	163.1	0.6333	26.7	0.4871	−2.4	97.6
1.00	1.4693	46.9	1.1427	14.3	1.0044	0.5	100.5
1.50	1.7713	18.1	1.6347	9.0	1.5041	0.3	100.3
2.50	2.6199	5.0	2.6240	4.8	2.5089	0.2	100.2
4.00	4.1572	3.9	4.1053	2.6	4.0134	0.3	100.3
8.00	8.0636	0.8	8.0400	0.5	8.0095	0.1	100.1
10.00	9.9916	−0.1	9.9947	−0.1	9.9947	−0.1	99,.9

*The data in the fourth column corrected according to (7) (see text).

**Based on corrected alkali consumption.