Answer:
pOH = 9; pH = 5; Solution is acidic
Step-by-step explanation:
the -log[OH] = the pOH. this means the pOH is 9.
the pOH and the pH add up to 14. 14-9=5 so the pH is 5.
the solution is acidic because the pOH is greater then the pH.
The answer to your question is pOH = 9, pH = 5, [H⁺] = 1 x 10⁻⁵ M, it is an acid.
Data
[OH⁻] = 10⁻⁹ M
pH = ?
pOH = ?
[H⁺] = ?
Process
1.- Calculate the pOH
pOH = -log [OH]
-Substitution
pOH = -log [10⁻⁹]
-Result
pOH = 9
2.- Calculate the pH
Formula
pH + pOH = 14
-Solve for pH
pH = 14 - pOH
pH = 14 - 9
pH = 5
3.- Calculate the [H⁺]
pH = -log[H⁺]
5 = -log [H⁺]
-Simplification
antilog -5 = [H⁺]
[H⁺] = 1 x 10⁻⁵
4.- The solution is an acid because the pH was lower than 7.
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