A 35.6 g sample of ethanol (C2H5OH) is burned in a bomb calorimeter,according to the following reaction.If the temperature rose from 35.0 to 76.0°C and the heat capacity of the calorimeter is 23.3 kJ/°C,what is the value of ΔH°rxn? The molar mass of ethanol is 46.07 g/mol.
C2H5OH(l) + 3 O2(g) → 2 CO2(g) + 3 H2O(g) ΔH°rxn = ?
A) -1.24 × 103 kJ/mol
B) +1.24 × 103 kJ/mol
C) -8.09 × 103 kJ/mol
D) -9.55 × 103 kJ/mol
E) +9.55 × 103 kJ/mol
Correct Answer:
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