December 1, 2015

Homework Help: Chem

Posted by Lena on Thursday, July 23, 2009 at 11:46pm.

Methylaime, CH3NH2.
If a 0.100 mol/L solution of methyamine has a pH of 11.80, calculate the ionization constant for the weak base. What is an ionization constant. Is it just K?

This is what I did so far:

11.80 = -log (concentration of h3o+)
10^-11.80 = (concentration of h3o+)
1.58 x 10^.12 = (concentration of h3o+)

K = (1.58 x 10^-12)^2 / (0.1-1.58 x 10^-12)

Not too sure what to do from here :S

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