Question Detail
Question
The reaction 4Al (s) + 3O₂ (g) → 2Al₂O₃ (s) ΔH° = -3351 kJ is ______, and therefore heat is ______ by the reaction.
Correct Answer
Option D is the correct answer.
Detailed Explanation
ΔH° is negative (-3351 kJ), indicating an exothermic reaction that releases heat to the surroundings.
Hint
Negative ΔH means exothermic; heat is released.