0.70 M KOH

find the pH

1 answer

Since KOH is a strong base, it totally dissociates, and thus the concentration of hydroxide ions in solution equals to the concentration of the KOH.

0.70M KOH

note that:
[H+][OH-]= 1.0 x 10^-14

so,

[H+]= 1.0x10^-14 / [0.70M] = ______[H+]

since pH = -log[H+]
plug in the [H+] you found above into the equation for pH.

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