How can I calculate dissociation of a weak acid?

1 Answer

To do this you'll need to use the Ka value of the acid and determine the equilibrium expression of the dissociation of that acid. Using the quadratic equation allows you to solve for the hydrogen ion concentration if you are given the initial concentration of the acid and the Ka value.

I'm including a video which discusses how to work with the dissociation of #HNO_2# with a concentration of 0.100M and a Ka value of 6.0 x #10^-4#