A sample of biphenyl (C12H10) weighing 0.791 g was ignited in a bomb calorimeter. The initial temp is 25°C, and after the reaction, the temperature of the calorimeter raised 2.13 K. C12H10 (s) + 14.5 O₂ (g) → 12 CO₂ (g) +5 H₂O (1) AH(1, H₂O) = -285.8kJ/mol Aƒ H(g, CO₂) = -393.2kJ/mol the calorimeter's heat capacity is 15 kJ/K, what is the formation enthalpy of biphenyl?
A sample of biphenyl (C12H10) weighing 0.791 g was ignited in a bomb calorimeter. The initial temp is 25°C, and after the reaction, the temperature of the calorimeter raised 2.13 K. C12H10 (s) + 14.5 O₂ (g) → 12 CO₂ (g) +5 H₂O (1) AH(1, H₂O) = -285.8kJ/mol Aƒ H(g, CO₂) = -393.2kJ/mol the calorimeter's heat capacity is 15 kJ/K, what is the formation enthalpy of biphenyl?
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Chapter6: Thermochemisty
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Problem 6.76QP: A sample of benzene, C6H6, weighing 3.51 g was burned in an excess of oxygen in a bomb calorimeter....
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Transcribed Image Text:A sample of biphenyl (C12H10) weighing 0.791 g was ignited in a bomb calorimeter. The
initial temp is 25°C, and after the reaction, the temperature of the calorimeter raised
2.13 K.
C12H10 (s) + 14.5 O₂ (g) → 12 CO₂ (g) +5 H₂O (1)
Af H(1, H₂O) = -285.8kJ/mol
AH(g, CO₂) = -393.2kJ/mol
If the calorimeter's heat capacity is 15 kJ/K, what is the formation enthalpy of
biphenyl?
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