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In a chemical reaction, if the enthalpy change is positive, the reaction is clas

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Question: In a chemical reaction, if the enthalpy change is positive, the reaction is classified as:

Options:

  1. Exothermic
  2. Endothermic
  3. Isothermal
  4. Adiabatic

Correct Answer: Endothermic

Solution: 

A positive enthalpy change indicates that the reaction absorbs heat, classifying it as endothermic.

In a chemical reaction, if the enthalpy change is positive, the reaction is clas

Practice Questions

Q1
In a chemical reaction, if the enthalpy change is positive, the reaction is classified as:
  1. Exothermic
  2. Endothermic
  3. Isothermal
  4. Adiabatic

Questions & Step-by-Step Solutions

In a chemical reaction, if the enthalpy change is positive, the reaction is classified as:
Correct Answer: endothermic
  • Step 1: Understand what enthalpy change means. It refers to the heat content of a system during a chemical reaction.
  • Step 2: Identify the sign of the enthalpy change. A positive enthalpy change means that heat is absorbed from the surroundings.
  • Step 3: Recognize the classification of reactions based on enthalpy change. If heat is absorbed, the reaction is classified as endothermic.
  • Enthalpy Change – Enthalpy change (ΔH) indicates the heat absorbed or released during a chemical reaction.
  • Endothermic Reaction – An endothermic reaction is one that absorbs heat from its surroundings, resulting in a positive enthalpy change.
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