Question Detail
Question
What quantity of heat is evolved when 5.550 mol H₂O(l) is formed from the combustion of H₂(g) and O₂(g)? H₂(g) + ½O₂(g) → H₂O(l) ΔH = -285.8 kJ
Correct Answer
Option C is the correct answer.
Detailed Explanation
Heat evolved = moles × ΔH per mole = 5.550 mol × 285.8 kJ/mol = 1586.19 kJ ≈ 1586 kJ.
Hint
Multiply the given ΔH by the number of moles.