Hello,
This friend of mine says that if you try to dry ZnCl2 in a flask, with a heat gun, and under a vacuum, it's going to yield Zn(OH)Cl, not ZnCl2, and therefore we must carry it from the bottle to the flask into a vacuum chamber that we don't have at this moment.
Instead, I say to him, that the moisture that the powder is going to gain in "its move" (carrying), from the bottle to the flask, is not going to be enough for a significant loss, I say that the OH and CL are going to be sucked by the pump leaving pure and dry ZnCl2 without major inconveniences.
Whom do you think is right?
Thank you.