[rozarria]

Is there a way to predict which reactions (or which portions of those reactions) are irreversible or reversible or is it entirely arbitrary? Namely, I am speaking of hydrohalogenation, dehydrohalogenation, dehydration, hydration, hydrogenation, etc. reactions. Our professor moves very quickly without explaining why certain parts of a reaction contain double arrows and why some only go to completion. Any feedback appreciated.

-rozarria

[FeLiXe]

in principle everything is reversible and you always have an equilibrium with a constant according to :delta:G

but if :delta: G is strongly negative you often just write the arrow in one direction because almost all the molecules are converted.