In a chemical reaction, if the enthalpy of products is less than that of reactan

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Question: In a chemical reaction, if the enthalpy of products is less than that of reactants, what can be concluded?

Options:

Correct Answer: The reaction is exothermic

Solution:

If the enthalpy of products is less, the reaction releases heat, indicating it is exothermic.

In a chemical reaction, if the enthalpy of products is less than that of reactants, what can be concluded?

In a chemical reaction, if the enthalpy of products is less than that of reactants, what can be concluded?

Step 1: Understand what enthalpy means. Enthalpy is a measure of the total energy of a system, including internal energy and the energy required to make room for it by displacing its environment.
Step 2: Identify the two parts of a chemical reaction: reactants (the starting materials) and products (the substances formed).
Step 3: Compare the enthalpy of the reactants and products. If the enthalpy of the products is less than that of the reactants, it means the products have lower energy.
Step 4: Recognize that when products have lower energy, the excess energy is released during the reaction, usually in the form of heat.
Step 5: Conclude that the reaction is exothermic, meaning it releases heat to the surroundings.

Enthalpy Change – The difference in enthalpy between products and reactants indicates whether a reaction is exothermic or endothermic.
Exothermic Reactions – Reactions that release heat to the surroundings, resulting in products with lower enthalpy than reactants.