Question

when 0.514 g of biphenyl (c12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 25.8*Celcius to 29.4*Celcius. Find deltaE rxn for the combustion of biphenyl in kj/mol biphenyl. The heat capacity of the bomb calorimeter is 5.86 kj/*C.

Answer 1

Given data Mass of biphenyl-0.514 g AT 29.4°C -25.8° C - 3.6°C Heat capacity of calorimeter, C 5.86 k.J/oC 5.86 kJ o 21.096 kJ 4cal -21.096 kJ In bomb calorimeter experiment txn 21.096 kJ 21.096 kJ 1 548G2010 0.514 g 0 1.0 mol C0 ДЕ in kJ/mol 1210 ー-6320 kJ/mol 6.3 x103 k.J/mol