Homework Help: chem

Posted by john on Wednesday, January 18, 2012 at 6:59pm.

calculate the PH of [OH-]
= 4.5×10−3 M

Please show how you work this problem.

chem - DrBob222, Wednesday, January 18, 2012 at 8:16pm
pOH = -log(OH^-)
pOH = -log(4.5E-3)
Then pH + pOH = pKw = 14 so
pH = 14-pOH
You should end up with 11.65
chem - john, Wednesday, January 18, 2012 at 8:43pm
thank you

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