Combustion of 2

question 53

Multiple Choice

Combustion of 2.14 g of liquid benzene (C₆H₆) causes a temperature rise of 16.2 °C in a constant-pressure calorimeter that has a heat capacity of 5.53 kJ/°C.What is ΔH for the following reaction? C₆H₆(l) + O₂(g) → 6 CO₂(g) + 3 H₂O( )

• A) -89.5 kJ/mol-rxn
• B) 41.8 kJ/mol-rxn
• C) -41.8 kJ/mol-rxn
• D) -3.27 × 10³ kJ/mol-rxn
• E) 89.5 kJ/mol-rxn

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