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What is the enthalpy of reaction (?Hrxn)? Why is this quantity important?

Chapter 8, Problem 13Q

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QUESTION:

What is the enthalpy of reaction (\(\Delta H_{r x n}\))? Why is this quantity important?

ANSWER:

Step 1 of 2

The enthalpy of reaction, denoted as  is the change in enthalpy (heat) that occurs during a chemical reaction at constant pressure. It is the difference between the total enthalpy of the products and the total enthalpy of the reactants.

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