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A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods.

A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods.

Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is known as calibrating the calorimeter.

In the laboratory a student burns a 0.796-g sample of glutaric acid(C5H8O4) in a bomb calorimeter containing 1000. g of water. The temperature increases from 25.70 °C to28.30 °C. The heat capacity of water is 4.184 J g-1°C-1.

The molar heat of combustion is −2151 kJ per mole of glutaric acid.

  • C5H8O4(s) +5 O2(g) ---->5CO2(g) + 4H2O(l) + Energy

Calculate the heat capacity of the calorimeter.

heat capacity of calorimeter=  J/°C

Ignition wires heat sample Thermometer Stirrer Water Insulated Sample Burning Steel outside dish chamber sample bomb Combusti


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