In a chemical reaction, if ΔH is negative, the reaction is classified as:

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Question: In a chemical reaction, if ΔH is negative, the reaction is classified as:

Options:

Correct Answer: Exothermic

Solution:

A negative ΔH indicates that the reaction releases heat, classifying it as exothermic.

In a chemical reaction, if ΔH is negative, the reaction is classified as:

In a chemical reaction, if ΔH is negative, the reaction is classified as:

Step 1: Understand what ΔH means. ΔH represents the change in enthalpy, which is a measure of heat content in a chemical reaction.
Step 2: Identify the sign of ΔH. If ΔH is negative, it means that the reaction is losing heat.
Step 3: Recognize what it means to lose heat in a reaction. When a reaction loses heat, it means that it is releasing energy into the surroundings.
Step 4: Classify the reaction based on the heat change. A reaction that releases heat is called an exothermic reaction.

Enthalpy Change (ΔH) – ΔH represents the change in enthalpy during a chemical reaction, indicating whether heat is absorbed or released.
Exothermic Reactions – Exothermic reactions are those that release heat to the surroundings, resulting in a negative ΔH.