Sharp EL-W535TG Operation Manual page 21

Exponential, Logarithmic
<Example 3>
Enter the value of a
1.0
Calculate the pH
4
Find the pH of hydrochloric acid HCl at a concentration of
1.0 x 10 -8 mol/L
* pH = 7 (neutral), pH < 7 (acidic), pH > 7 (alkaline)
pH = -log
Operation
10
14
a
(
a +
10
8
2
21
2 +4x10 -14 - a
)
2
Display