Question Detail
Question
For the reaction: H₂(g) + Br₂(g) → 2HBr(g), 72 kJ of heat was given off. How much heat is released when 1.0 mol of HBr is formed?
Correct Answer
Option B is the correct answer.
Detailed Explanation
The reaction produces 2 moles of HBr and releases 72 kJ. For 1 mole of HBr, the heat released is 72 kJ / 2 = 36 kJ.
Hint
Heat released is proportional to the amount of product formed.