The reaction for magnesium iodide when put into water is as below
MgI2(s) → Mg^2+(aq) + 2I^-(aq)
when magnesium iodide but into water it dissociate/ ionize completely into Mg^2+ and 2l^- ions. Magnesium iodide dissociate/ionize completely because magnesium iodide is a strong electrolyte which dissociate/ ionize completely into their ions when it is put into water .
Tons of wind, rain, thunder. Stuff like that.
delta g must be negative in order for the reaction to be spontaneous bb ♡
D) It is unlikely that a specific cause can be determined, but the treatment would likely be the same in either case