Which statement best describes the temperature dependence of an addition reaction? addition reactions are thermodynamically impossible. addition reactions are thermodynamically disfavored at all temperatures. addition reactions are thermodynamically favored at low temperatures. addition reactions are thermodynamically favored at high temperatures. addition reactions are thermodynamically favored at all temperatures.

Addition reactions are thermodynamically favored at low temperatures.

Explanation:

Compared to substitutions or eliminations, addition reactions do not require to break as many bonds as them, as such, they do not require such a high input of energy (ie. temperature) in order to take place.

This is why if there's a high temperature, the reactions that require more energy -like substitutions or eliminations- will be more thermodinamically favored than the reactions that require less energy -like additions-, and viceversa.