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Geesh, I'm puzzled!

angelheart
in Chemistry

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Going through my textbook there isn't anything to explain this to me simply. Can anyone help? :D

 

What is the [H3O+] of a 2.0M solution of the weak acid HA?

Ka=1.8x10^-7

I can give you a hint for you to start, but won't give you a direct answer, you'll have to try yourself. I am surprised that a textbook that asks these type of questions does not cover it somewhere.

 

Use your normal equilibrium setup, and equate that to your given Ka value in order to solve for the H+ concentration.

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