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1. When 0.435g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter,

ID: 2902289 • Letter: 1

Question

1. When 0.435g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 24.8 C to 29.6 C.

        

A. Find ?Erxn for the combustion of biphenyl in kJ/mol biphenyl. The heat capacity of the bomb calorimeter, determined in a separate experiment, is 5.86 kJ/?C.

2. When 1 mol of a fuel is burned at constant pressure, it produces 3450kJ of heat and does 11kJ of work.                

A.    What is the value of ?E for the combustion of the fuel?    

          B. What is the value of ?H for the combustion of the fuel?

Explanation / Answer

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