Calculate pH and OH?

Question

0.1 M HNO2 that will be 6.5% ionized
0.1 M NH3 that will be 1.3% ionized
0.1 M NaHSO4 that will be 29% ionized

They are all weak acids/bases...please explain!

Thanks!

Thanks for the reply, but I'm looking for the [OH-], not the pOH
thanks.

Answer 1

Multiply 0.1 by 0.065 and you get 0.0065M.

Now take the negative logarithm of that to get the pH. Subtract from 14 to get the pOH.

The same sort of calculation on the ammkonia will give you pOH, and then just subtract from 14 to get the pH.