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When 0.514 g of biphenyl (C12H10) undergoes combustion in
Chapter 6, Problem 73E(choose chapter or problem)
When 0.514 g of biphenyl \(\left(\mathrm{C}_{12} \mathrm{H}_{10}\right)\) undergoes combustion in a bomb calorimeter, the temperature rises from \(25.8^{\circ} \mathrm{C}\) to \(29.4^{\circ} \mathrm{C}\). Find \(\Delta E_{\mathrm{rxn}}\) for the combustion of biphenyl in kJ/mol biphenyl. The heat capacity of the bomb calorimeter, determined in a separate experiment, is \(5.86 \mathrm{~kJ} /{ }^{\circ} \mathrm{C}\).
Questions & Answers
QUESTION:
When 0.514 g of biphenyl \(\left(\mathrm{C}_{12} \mathrm{H}_{10}\right)\) undergoes combustion in a bomb calorimeter, the temperature rises from \(25.8^{\circ} \mathrm{C}\) to \(29.4^{\circ} \mathrm{C}\). Find \(\Delta E_{\mathrm{rxn}}\) for the combustion of biphenyl in kJ/mol biphenyl. The heat capacity of the bomb calorimeter, determined in a separate experiment, is \(5.86 \mathrm{~kJ} /{ }^{\circ} \mathrm{C}\).
ANSWER:Step 1 of 5
\(\Delta {E_{Rxn}}\;\) signifies the internal energy (E) alteration associated with a chemical reaction . It is commonly employed in thermodynamics to express the variance in the overall energy of a system before and after a chemical reaction has transpired.