Aerospace Engineering > GATE 2026 > Heat of Reaction
Isobutane (C4H10) is burnt completely in pure oxygen as per the reaction given below. Given that the standard heats of formation (in kcal/mole) of isobutane, carbon dioxide, and water vapour are –31.489, –94.052, and –60.150, respectively, the heat of reaction is ________ kcal (rounded off to 2 decimal places).
C4H10 + 6.5 O2 → 4 CO2 + 5 H2O
C4H10 + 6.5 O2 → 4 CO2 + 5 H2O
Correct : -663.769
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