[dja01]

I'm following a procedure and was wondering if anyone had some insight.
Two mole equivalents of NaX are meant to be dissolved, with X being Br, I, etc. When calculating the amount of grams I actually need, do I just convert 2 moles of NaX to grams? Or do I have to look at reaction stoichiometry?

Thanks.

[DrCMS]

Two mole equivalents of NaX (X being Br, I, etc.) are not the same as 2 moles of NaX so yes you need to look at reaction stoichiometry.

If for example you need 2 moles of NaX for every 1 moles of reactant you need to work out how many moles of reactant you have and then scale the weight of NaBr or NaI to give twice as many moles as you calculate for the reactant.