7th edition 6D.5

[AhYeon_Kwon_2H]

Calculate the pH, pOH, and percentage protonation of solute in each of the following aqueous solutions: (a) 0.057M NH₃(aq); etc.

How do we find the OH- concentration without the K_b given?

[Fionna Shue 4L]

Given Ka, you can find the H+ concentration and the pH value. pOH = 14- pH and the concentration of OH- is 10^(-pOH).

Another way of finding the concentration of OH- is knowing that [OH-]*[H+]=10^-14. Once you have the concentration of H+, [OH-]=(10^-14)/[H+]

[Margaret Akey]

do we have to look up the ka values ourselves in this case?

[MAC 4G]

For this homework question, early in the chapter there was a table that provides all of the Kb values. That's what you would use to determine x in your ICE box, which you could then use to figure out pOH and then pH.