Exponent tables for buffer preparation

Table of deviation of pH from pK as a function of [A^-]/[HA]

[A^-]/[HA]	pH		[A^-]/[HA]	pH
1.0	0.0		1.0	0.0
1.12	0.05	x>	0.88	-0.05
1.26	0.1		0.8	-0.15
1.41	0.15		0.71	-0.15
1.58	0.2		0.63	-0.2
1.78	0.25		0.56	-0.25
2.0	0.3		0.5	-0.3
2.5	0.4		0.4	-0.4
3.2	0.5		0.32	-0.5
4.0	0.6		0.25	0.6
5.0	0.7		0.2	-0.7
6.3	0.8		0.16	-0.8
7.9	0.9		0.125	-0.9
10	1.0		0.1	-1.0
12.6	1.1		0.08	-1.1
15.8	1.2		0.063	-1.2