Anonymous
Anonymous asked in Science & MathematicsChemistry · 8 years ago

For this reaction, C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O, the ∆H is –2200 kJ.?

For this reaction, C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O, the ∆H is –2200 kJ. If two moles of C3H8(g) reacted with excess oxygen, which of the following would be true?

A) 1100 kJ of heat would be released to the surroundings.

B) 4400 kJ of heat would be absorbed by the system.

C) 1100 kJ of heat would be absorbed by the system.

D) 4400kJ of heat would be released to the surroundings.

2 Answers

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  • John
    Lv 7
    8 years ago
    Favorite Answer

    The formula shows that burning 1 mole of propane (C₃H₈) liberates 2200kJ of thermal energy. If we burn 2 moles instead, we can expect to liberate 4400-kJ of thermal energy. Answer "D" is best.

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    Lv 4
    4 years ago

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