What is the pOH of a solution with a pH of 9.5?

Question

What is the pOH of a solution with a pH of 9.5?

Answer 1

pOH=14-pH

pOH=14-9.5

pOH=4.5

make it a good day

Answer 2

pOH is -Log[OH-]

since you know pH you can find [H+] and from [H+] you can also find [OH-], and to find pOH you can just take the -Log[OH-]

so,

pH = -Log[H+]

9.5 = -Log[H+]

-9.5 = Log[H+]

[H+] = 10^-9.5 = 3.1622776 x 10^-10

[H+][OH-] = 1 x 10^-14

[OH-] = 1 x 10^-14/3.1622776 x 10^-10 = 3.1623 x 10^-5

pOH = -Log[OH-] = -Log[3.1623 x 10^-5] = 4.5

Answer 3

pH + pOH = 14

(9.5) + pOH = 14

14 - 9.5 = pOH

4.5 = pOH