> This isn’t a redox reaction though. Those are tin ions in equilibrium with each other.. so no combustion. I agree I wouldn't call this example combustion (wh

> This isn’t a redox reaction though. Those are tin ions in equilibrium with each other.. so no combustion. I agree I wouldn't call this example combustion (which is typically required to be highly exothermic and therefore not easily reversible), but I believe it is a redox reaction. It's the transfer of electrons from one ion to another, which meets the definition I was taught. Wikipedia seems to agree, both with my definition of redox reaction [1], and that this is one [2]. [1] https://en.wikipedia.org/wiki/Redox https://en.wikipedia.org/wiki/Redox [2] (See Introduction and History): https://en.wikipedia.org/wiki/Disproportionation https://en.wikipedia.org/wiki/Disproportionation