When 100 G of Ethane, C₂ H₆(g), Burns in Oxygen, 519

question 32

Multiple Choice

When 10.0 g of ethane, C₂ H₆(g) , burns in oxygen, 519 kJ of heat are released. What is D H for the following thermochemical equation?
2 C₂ H₆(g) + 7 O₂(g) 4 CO₂ (g) + 6 H₂ O ( )

• A) +3.12×10³ kJ
• B) +1.56×10³ kJ
• C) - 3.12×10³ kJ
• D) - 1.56×10³ kJ
• E) none of these

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