The given reaction has to be identified that it belongs to exothermic or endothermic. Concept Introduction: Energy: It is the capacity or ability to do work. Joule (J) is the SI unit of energy. Enthalpy H is the amount energy absorbed or released in a process. Enthalpy H = U + P V Where, U is the internal energy P is the pressure V is the volume Exothermic reaction: Exothermic reactions are those in which evolution of heat takes place during chemical reaction. Endothermic reaction: Endothermic reactions are chemical reactions in which heat is absorbed during chemical reaction. In such type of reactions, external energy is needed.

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Chapter 4, Problem 45QRT

Interpretation Introduction

Interpretation:

The given reaction has to be identified that it belongs to exothermic or endothermic.

Concept Introduction:

Energy: It is the capacity or ability to do work. Joule (J) is the SI unit of energy.

Enthalpy H is the amount energy absorbed or released in a process.

Enthalpy H = U + PV

Where,

U is the internal energy

P is the pressure

V is the volume

Exothermic reaction: Exothermic reactions are those in which evolution of heat takes place during chemical reaction.

Endothermic reaction: Endothermic reactions are chemical reactions in which heat is absorbed during chemical reaction. In such type of reactions, external energy is needed.

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