Question

When using the Debye Huckel equation was does alpha represent? I'm trying to use it to find the activity coefficient they use that number some how to fin the [H]. Can someone please explain?

Answer 1

where alpha is is the size of the hydrated ion in pm

there is a worked problem here.

http://chemistry.stackexchange.com/questions/9642/using-activities-and-extended-debye-huckel-equation-find-the-ph-of-the-solution