Consider the equation C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O. The ΔH^o_comb for the given reaction is _____.
(Given ΔH^o_f values of C₂H₅OH = -277.60 kJ/mol, CO₂ = -393.50 kJ/mol, and H₂O = -285.30 kJ/mol)

Question

Quizplus · Accepted Answer

To calculate ΔH^o_comb, we need to use the ΔH^o_f values of each of the reactants and products. We can then use the formula: ΔH^o_comb = ΣΔH^o_f(products) - ΣΔH^o_f(reactants) Plugging in the values given: ΔH^o_comb = [2(-393.50 kJ/mol) + 3(-285.30 kJ/mol)] - [(-277.60 kJ/mol) + 3(-393.50 kJ/mol)] ΔH^o_comb = -1365.3 kJ/mol Therefore, the answer is C, -1365.3 kJ.

Consider the Equation C2H5OH + 3O2 → 2CO2 + 3H2O

Consider the Equation C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O