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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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When a chemical system evolves energy, where does the energy go?

Interpretation Introduction

Interpretation:

When a chemical system evolves energy, where does this energy go should be determined.

Concept Introduction:

Energy is the ability to do work or produce heat. The law of conservation of energy says that theenergy cannot be created or destroyed, but it can be converted from one type to another. It is also called the first law of thermodynamics, according to which the energy of the universe is constant.

Change in enthalpy(ΔH) is the heat exchanged during the process under the conditions of constant pressure. ΔH for a chemical reaction can be positive or negative. A chemical reaction which has a positive sign is said to be endothermic, while a reaction having a negative ΔH is said to be exothermic.

Explanation

When the energyis evolved in a process, the reaction or process is said to be an exothermic reaction...

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