Question Detail
Question
What is the sign of ΔH for an exothermic reaction?
Correct Answer
Option B is the correct answer.
Detailed Explanation
For exothermic reactions, ΔH is negative (-Ve), as shown in examples like 4Fe(s)+3O2(g)→2Fe2O3(s) ΔH⚬ = -1648 kJ/mol.
Hint
The notes show exothermic examples with negative ΔH values.