
Concept explainers
Interpretation: The possibility of measurement of heat energy of a combustion reaction by placing the thermometer directly into flames needs to be explained.
Concept introduction: Combustion is a

Answer to Problem 3E
No, the heat energy of a combustion reaction cannot be measured by placing a thermometer directly into flames.
Explanation of Solution
Thermometer is an instrument used to measure temperature. Placing thermometer into flames measure the temperature of the combustion reaction but it cannot measure the heat given off by the reaction. Heat energy and temperature both are different in a reaction. So, placing thermometer directly into flames gives no measurement of heat energy of reaction.
Thermometer only measures the temperature of reaction.
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