Enthalpy of combustion of food, fuel and other compounds can be measured accurately by:
Correct answer: B. Bomb calorimeter
- A. Glass calorimeter
- B. Bomb calorimeter
- C. Thermometer
- D. Manometer
Explanation
A bomb calorimeter is specifically designed for accurately measuring the heat of combustion. It is a constant-volume device that can withstand the high pressures generated during combustion, allowing for a precise measurement of the change in internal energy, from which enthalpy can be calculated.
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About Thermochemistry and Energetics of Chemical Reactions
Thermochemistry measures energy changes in chemical reactions and distinguishes exothermic from endothermic processes. Work covers systems, surroundings and state functions, internal energy, the first law of thermodynamics, enthalpy and Hess's law, including the sign conventions used when heat enters or leaves a system.
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