Calculate the change in Gibbs free energy for each of the following sets of delta Hdegree rxn,...

Question:

Calculate the change in Gibbs free energy for each of the following sets of delta Hdegree rxn, delta S degreerxn, and T.

Part A delta H degree rxn=- 130 kJ ; delta S degree rxn= 255 J/K ; T= 307 K

Part B delta H degree rxn= 130 kJ ; delta S degree rxn=- 255 J/K ; T= 307 K

Part C delta H degree rxn=- 130 kJ ; delta S degree rxn=- 255 J/K ; T= 307 K

Part D delta H degree rxn=- 130 kJ ; delta S degree rxn=- 255 J/K ; T= 557 K

Predict whether or not the reaction in all parts will be spontaneous at the temperature indicated.

Gibbs Free Energy Change

Gibbs free energy change is used to identify whether a given reaction is spontaneous or non-spontaneous at a particular temperature. The negative value of Gibbs energy change indicates that the reaction is spontaneous.

Answer and Explanation: 1

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The change in Gibbs energy is calculated by the formula given below.

{eq}\Delta G = \Delta H - T\Delta S \cdot \cdot \cdot \cdot \cdot \cdot...

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Spontaneous Reactions & Gibbs Free Energy

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Chapter 12 / Lesson 8
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In this lesson, we will learn about spontaneous reactions and how we can use Gibbs free energy to predict them. We will remind ourselves about enthalpy and entropy and discuss the importance of temperature and spontaneity.


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