The Combustion of a 0

question 66

Multiple Choice

The combustion of a 0.440 g sample of ethanol (C₂ H₅ OH, molar mass = 46.07 g/mol) in a bomb calorimeter with a heat capacity of 5.278 kJ/ C causes the temperature to rise from 23.98 C to 26.45 C. What is D E for the reaction?
C₂ H₅ OH ( ) + 3 O₂(g) 2 CO₂ (g) + 3 H₂ O ( )

• A) - 13.0 kJ
• B) - 1.36×10³ kJ
• C) - 29.6 kJ
• D) +13.0 kJ
• E) none of these

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