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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) + Combustion of 2.14 g of liquid benzene (C<sub>6</sub>H<sub>6</sub>) 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? C<sub>6</sub>H<sub>6</sub>(l) + O<sub>2</sub>(g) → 6 CO<sub>2</sub>(g) + 3 H<sub>2</sub>O( ) A) -89.5 kJ/mol-rxn B) 41.8 kJ/mol-rxn C) -41.8 kJ/mol-rxn D) -3.27 × 10<sup>3</sup> kJ/mol-rxn E) 89.5 kJ/mol-rxn O2(g) → 6 CO2(g) + 3 H2O( Combustion of 2.14 g of liquid benzene (C<sub>6</sub>H<sub>6</sub>) 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? C<sub>6</sub>H<sub>6</sub>(l) + O<sub>2</sub>(g) → 6 CO<sub>2</sub>(g) + 3 H<sub>2</sub>O( ) A) -89.5 kJ/mol-rxn B) 41.8 kJ/mol-rxn C) -41.8 kJ/mol-rxn D) -3.27 × 10<sup>3</sup> kJ/mol-rxn E) 89.5 kJ/mol-rxn )


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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