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When calculating ionic strength of a solution, does it matter if it's a weak acid in...

When calculating ionic strength of a solution, does it matter if it's a weak acid in solution since not all of it will disassociate? Or do you assume all will disassociate? For instance if you have HF and NaOH in solution where [HF]>[NaOH], would you calculate ionic strength based solely off the concentration of each if they fully disassociated or do you need to account for how much will disassociate with Ka or something like that?

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