Polynomial Equation - Sharp EL-W531X Operation Manual

Polynomial equation

(Function for EL-W506X/EL-W516X/EL-W506)
<Example 1>
Let the hydrochloric acid concentration be c (= 1.0 x 10
hydrogen ion concentration be x.
(1) Solve the following quadratic equation to find the hydrogen ion concentration x:
where
(2) Use the result of (1) to find the pH (= - log x) of hydrochloric acid.
(1)
Save constants
1.0
1.0
x 2 - cx - K = 0
w
-14
K = 1.0 x 10 [mol / ] (ionic product of water)
w
pH = - log x (x>0)
Operation
0 (NORMAL)
B
C
B C
14
8
55
-8
mol / ), and the
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