Question #13f80

1 Answer
Larry Leitch-Casey · Jackie Shlecter
Apr 21, 2014

Well, you would find the pOH using pOH= -log(OH-), then you would subtract that answer from 14, as pH + pOH = 14 :) Since you are only given [OH], you HAVE to find pOH first.

In this example, you would do pOH = #-log(8.3x10^-4)# which comes out to approximately 3.08.

Next, you know that pOH + pH = 14 so you sub in pOH....

3.08 + pH = 14 --> solve for pH
pH = 14 - 3.08
pH = 10.92

Therefore, the pH is 10.92

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