A plot of potential-energy-versus-reaction-progress for the given reaction has to be sketched. Concept introduction: The plot of potential-energy-versus-reaction-progress enables the study of endothermic, exothermic reactions. The co-ordinates in the plot of potential-energy-versus-reaction-progress should be plotted as follows. The progress of reaction in time has to be plotted in X-axis of the plot. The potential energy of the reaction has to be plotted in Y-axis of the plot. ΔH is enthanpy change . It refers to the amount of heat absorbed or released in a reaction. The signs of Δ H : If the value of Δ H is less than zero , then the - v e sign of the value represents that the heat is released out by the system and it is known as E x o t h e r m i c p r o c e s s ( E x o = o u t ; t h e r m i c = h e a t ) . If the value of Δ H is more than zero , then the + v e sign of the value represents that the heat is absorbed in by the system and it is known as E n d o t h e r m i c p r o c e s s ( E n d o = i n ; t h e r m i c = h e a t ) .

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Chapter 14, Problem 14.31QP

(a)

Interpretation Introduction

Interpretation:

A plot of potential-energy-versus-reaction-progress for the given reaction has to be sketched.

Concept introduction:

The plot of potential-energy-versus-reaction-progress enables the study of endothermic, exothermic reactions.

The co-ordinates in the plot of potential-energy-versus-reaction-progress should be plotted as follows.

The progress of reaction in time has to be plotted in X-axis of the plot.

The potential energy of the reaction has to be plotted in Y-axis of the plot.

ΔH is enthanpy change.

It refers to the amount of heat absorbed or released in a reaction.

The signs of ΔH:

If the value of ΔH is less than zero, then the -ve sign of the value represents that the heat is released out by the system and it is known as Exothermic process (Exo = out ; thermic = heat ).

If the value of ΔH is more than zero, then the +ve sign of the value represents that the heat is absorbed in by the system and it is known as Endothermic process (Endo = in ; thermic = heat ).

(b)

Interpretation Introduction

Interpretation:

A plot of potential-energy-versus-reaction-progress for the given reaction has to be sketched.

Concept introduction:

The plot of potential-energy-versus-reaction-progress enables the study of endothermic, exothermic reactions.

The co-ordinates in the plot of potential-energy-versus-reaction-progress should be plotted as follows.

The progress of reaction in time has to be plotted in X-axis of the plot.

The potential energy of the reaction has to be plotted in Y-axis of the plot.

ΔH is enthanpy change.

It refers to the amount of heat absorbed or released in a reaction.

The signs of ΔH:

If the value of ΔH is less than zero, then the -ve sign of the value represents that the heat is released out by the system and it is known as Exothermic process (Exo = out ; thermic = heat ).

If the value of ΔH is more than zero, then the +ve sign of the value represents that the heat is absorbed in by the system and it is known as Endothermic process (Endo = in ; thermic = heat ).

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