Question

When 0.601 g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 26. ∘C to 30.3 ∘C. Find ΔErxn 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 ?

Answer 1

The heat produced by the combustion of the benzene sample can be calculated using the equation q = CT, where q is the heat produced, C is the heat capacity of the bomb calorimeter, and T is the change in temperature. Given the heat capacity of the bomb calorimeter and the change in temperature, we can calculate the heat produced in kilojoules.

Step-by-step explanation:

The heat produced by the combustion of the benzene sample can be calculated using the equation: q = CΔT, where q is the heat produced, C is the heat capacity of the bomb calorimeter, and ΔT is the change in temperature. Given that the heat capacity of the bomb calorimeter is 784 J/°C, and the change in temperature is 8.39 °C, we can substitute these values into the equation to find the heat produced:

q = (784 J/°C) * (8.39 °C)

q = 6552.76 J

To convert this value to kilojoules (kJ), we divide by 1000:

q = 6.55276 kJ