Rh---
In the paper, the free base is added to the 75% H2SO4 (BTW, is this 75% by weight of volume?).
At 125C, steam is passed into the mixture to 'facilitate mixing of the contents.'
SWIM sure doens't mean to sound stupid.. But wouldn't you expect the solution to already be homogenous? Or is it the 1g of ZnCl2 that needs to be dissolved?
Also, what kind of stirring is best for this one?
xoxo
Julia