Question

A chemist is using a solution of HNO3 that has a pH of 3.75.

What is [OH− ] for the solution? Round to the nearest hundredth.

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What is the pOH of the solution? Round to the nearest hundredth.

Answer 1

pOH = 14.00 − pH = 14.00 − 3.75 = 10.25

[OH−] = 10^(−pOH) = 10^(−10.25) = 5.62 × 10^(−11) M

So [OH−] = 5.62×10^−11 M and pOH = 10.25.