When the enthalpy of the reactants is greater than the enthalpy of the products the reaction will be:
Correct answer: B. Exothermic
- A. Endothermic
- B. Exothermic
- C. Spontaneous
- D. Non spontaneous
Explanation
When the enthalpy of the reactants is greater than the enthalpy of the products, it means that the reaction releases more energy than it absorbs. This type of reaction is called exothermic. In an exothermic reaction, heat energy is released to the surroundings, resulting in an increase in temperature.
This question appeared on the KMU Centralized Admission Test 2021 paper, which you can sit online with every answer explained.
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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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