Quote: Originally posted by chornedsnorkack |
S2Cl2 is a perfectly well characterized substance that freezes at -80 degrees and boils at +137 degrees without decomposition.
HI is a perfectly well characterized substance that freezes at -51 degrees and boils at -35 degrees without decomposition.
HCl boils at -85 degrees. Its volatility may drive metathesis.
Which conditions would you pick to get sulphur iodide with minimum decomposition? E. g. would you add HI to excess of S2Cl2, or
vice versa?
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First, realise that I'm guessing here based on no direct knowledge,
... by analogy with 'add acid to water not vice versa',
and assuming that the reaction is exothermic,
I would add the higher b.p. liquid to the lower b.p. liquid,
as vice versa would be more likely to cause the lower b.p. liquid to boil. |