Given the following reactions (1)2NO → N₂ + O₂ ΔH = -180 kJ (2)2NO + O₂ → 2NO₂ ΔH = -112 kJ The enthalpy of the reaction of nitrogen with oxygen to produce nitrogen dioxide N₂ + 2O₂ → 2NO₂ Is __________ kJ.

Question

Quizplus · Accepted Answer

The enthalpy change for the reaction can be calculated using Hess's law. By reversing reaction (1) and adding it to reaction (2), we get the target reaction. The enthalpy change is -112 kJ + 180 kJ = 68 kJ.

Given the Following Reactions (1)2NO → N2 + O2 ΔH

Given the Following Reactions (1)2NO → N₂ + O₂ ΔH