Question

When 0. 25 g of the organic compound naphthalene are burned in a bomb calorimeter, the temperature of the water in the calorimeter increases from 24. 00°C to 26. 43 °C. The calorimeter's heat capacity is 4. 13 kJ/°C. How much heat (q_{rxn}) in kilojoules is released by the combustion of the naphthalene?.

Answer 1

The combustion of 0.25 g of naphthalene released 2.53 kJ of heat. In this case, we have a mass of 0.25 g, a heat capacity of 4.13 kJ/°C, and a temperature change of 2.43°C.

Step-by-step explanation:

To determine the amount of heat released by the combustion of naphthalene, we can use the equation q = m * C * ΔT, where q is the heat released, m is the mass of the naphthalene, C is the heat capacity of the calorimeter, and ΔT is the change in temperature.

In this case, we have a mass of 0.25 g, a heat capacity of 4.13 kJ/°C, and a temperature change of 2.43°C.

Plugging these values into the equation, we get q = 0.25 g * 4.13 kJ/°C * 2.43°C

= 2.53 kJ.

Therefore, the combustion of the naphthalene released 2.53 kJ of heat.