c2h6o + 3o2 → 2co2 + 3h2o

Question

Is the reaction endothermic or exothermic?

SHOW WORK!!

Answer 1

The reaction is exothermic. This can be determined by calculating the change in enthalpy (ΔH) of the reaction.

ΔH = [2(−393.5) + 3(−285.8)] - [(−84.7) + 3(−241.8)]

ΔH = -1341.2 kJ/mol

Since the enthalpy of the reaction is negative, the reaction is exothermic.