55
<Example 1>
Let the hydrochloric acid concentration be
c
(= 1.0 x 10
-8
mol / ), and the
hydrogen ion concentration be
x
.
(1) Solve the following quadratic equation to find the hydrogen ion concentration
x
:
x
2
- cx - K
w
= 0
where
K
w
= 1.0 x 10
-14
[mol / ] (ionic product of water)
(2) Use the result of (1) to find the pH (= - log
x
) of hydrochloric acid.
Save constants
(1)
pH = - log
x
(
x
>0)
1.0
14
0 (NORMAL)
Operation
1.0
8
B
B
C
C
Polynomial equation
Display
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Summary of Contents for WriteView EL-W531X
Page 1: ...SCIENTIFIC CALCULATOR OPERATION GUIDE SCIENTIFIC CALCULATOR OPERATION GUIDE Write View ...
Page 38: ...37 Example Operation Absolute Value Returns an absolute value Display 3 4 ...
Page 54: ...53 3 100 10 20 3000 0 x x dx Integration calculation x dx ...
Page 70: ...69 a b r ...
Page 75: ... SHARP CORP SEP 13 ...