Enthalpy of combustion for 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 measures heat released by burning a substance in a sealed vessel at constant volume, allowing accurate measurement of combustion energy for fuels and food. Students may choose a glass calorimeter because it is used for many solution reactions, but combustion requires the stronger sealed bomb apparatus.
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About Enthalpy
Enthalpy is the heat content of a system measured at constant pressure, and its change indicates whether a reaction or physical process is endothermic or exothermic. The topic covers state functions, enthalpy diagrams, standard enthalpy of formation, combustion and neutralisation, and the relationship between ΔH and internal energy change.
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