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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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How ¡s Hess’s law a restatement of the first law of thermo dynamics?

Interpretation Introduction

Interpretation:

To determine the Hess’s law being a restatement of the first law of thermodynamics.

Concept Introduction:

The law of conservation of energy states that the energy can neither be created nor destroyed.

Explanation

Hess’s law states that the change in total enthalpy in the chemical reaction is the total summation of all the changes taking place with multiple stages of reaction. The principle of the first law which is the conservation of energy is been expressed by the Hess’s law. In a chemical reaction the enthalpy does not depend on the path where the chemical reaction takes place from the start to the final stage. This can be applied to the cases that are special containing the chemical reactions, the state of the charges, at constant pressure and temperature. The complete energy required for the chemical reaction is determined by the Hess’s law and it gets divided into steps...

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