Carbon monoxide is converted to carbon dioxide in automobile catalytic converters according to the thermochemical equation below.
CO(g) + ½ O2(g) → CO2(g)
Average bond energies (298 K):
• C≡O (in CO) 1072 kJ mol⁻¹
• O=O 498 kJ mol⁻¹
• C=O (in CO2) 799 kJ mol⁻¹
Respond to each part, showing detailed work and including correct units.
(a) Identify the number of each type of bond broken and formed per mole of reaction as written.
(b) Calculate the total energy required to break the reactant bonds.
(c) Calculate the total energy released upon forming the product bonds.
(d) Determine ΔH for the reaction and comment on whether this step in the converter is expected to release or absorb heat.
(e) Assuming the converter processes 4.00 mol of CO per second, estimate the rate (in kJ s⁻¹) at which heat is released or absorbed by this reaction.