The enthalpy diagram for the process of dissolving KCl ( s ) in H 2 O (endothermic) is to be drawn. Concept introduction: The enthalpy is the thermodynamic property of the system. It is defined as the sum of internal energy and the product of pressure and volume of the system. It is a state function and is independent of the path followed by the system from initial to the final state. It is an extensive property. The total enthalpy of the system cannot be measured directly so the change in enthalpy ( Δ H ) is measured. If Δ H of the reaction is positive, it is an endothermic reaction and if Δ H of the reaction is negative, it is an exothermic reaction. The enthalpy diagram is the representation that shows the change in enthalpy as the reaction proceeds from reactants to products.

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Chapter 13, Problem 13.30P

Interpretation Introduction

Interpretation:

The enthalpy diagram for the process of dissolving KCl(s) in H2O (endothermic) is to be drawn.

Concept introduction:

The enthalpy is the thermodynamic property of the system. It is defined as the sum of internal energy and the product of pressure and volume of the system. It is a state function and is independent of the path followed by the system from initial to the final state. It is an extensive property. The total enthalpy of the system cannot be measured directly so the change in enthalpy (ΔH) is measured. If ΔH of the reaction is positive, it is an endothermic reaction and if ΔH of the reaction is negative, it is an exothermic reaction.

The enthalpy diagram is the representation that shows the change in enthalpy as the reaction proceeds from reactants to products.

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