In which of the following reactions is the enthalpy change likely to be the larg

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Question: In which of the following reactions is the enthalpy change likely to be the largest?

Options:

Correct Answer: Combustion of gasoline

Solution:

The combustion of gasoline releases a large amount of energy, resulting in a large enthalpy change.

In which of the following reactions is the enthalpy change likely to be the largest?

In which of the following reactions is the enthalpy change likely to be the largest?

Correct Answer: Combustion of gasoline

Step 1: Understand what enthalpy change means. It is the amount of energy released or absorbed during a chemical reaction.
Step 2: Identify the reactions being compared. Look for reactions that involve combustion, especially of fuels like gasoline.
Step 3: Recognize that combustion reactions typically release a lot of energy because they involve breaking bonds in reactants and forming new bonds in products.
Step 4: Compare the energy released in the combustion of gasoline to other reactions. Gasoline combustion is known to release a significant amount of energy.
Step 5: Conclude that the combustion of gasoline is likely to have the largest enthalpy change among the reactions listed.

Enthalpy Change – Enthalpy change refers to the heat content change during a chemical reaction at constant pressure, often associated with energy release or absorption.
Combustion Reactions – Combustion reactions typically involve the reaction of a substance with oxygen, resulting in the release of energy, often leading to large enthalpy changes.