Hello everybody!
I need to use Mg(NO3)2 which, in principle, is hexahydrate (x 6 H2O), but the vial was not very well closed for a long time so water drops are now visible inside the vial. I think I could no longer assume its molarity as being Mg(NO3)2 x 6 H2O.
How should I dry up Mg(NO3)2? Two options come to my mind:
1) Heating at, say, 60ºC overnight (would it be dangerous? Conversion to hazardous substances like nitric oxide is possible?)
2) By applying vacuum (for how much time?)
Besides, after the selected process has been completed, can I assume that Mg(NO3)2 will be not longer associated with any H2O molecule? So, will I calculate its molarity on the basis of Mg(NO3)2 alone and no longer Mg(NO3)2 x 6 H2O?
Thanks a lot for your help!
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