What are some examples of Gibbs free energy?

Answer 1

The enthalpy change of a reaction, delta H minus the entropy of the reaction system multiplied by the product of temperature (t), is known as Gibbs free energy, or delta G.

The following is the equation:

G=H−TS

Regarding examples, I'm not sure if you meant examples from calculations or from real life, so I've included both below.

To determine whether a reaction is spontaneous or not, one can use Gibbs Free Energy. An example problem would be:

For the following reaction, determine the temperature at which ΔG = 0: (Given: ΔH = -176 kJ and ΔS = -284.5 J/K) CAUTION: Watch out for units. NH3(g) + HCl(g) ---> NH4Cl(s)

The above equation is used to separate T to be on one side, resulting in (G+H)/S = T. The values in the equation are then substituted. As the question puts it, "Beware of units!"

Since 1 J = 1000 kJ, we get -0.2845 kJ from -284.5 J/K/1000.

You should be able to get the answer 619K by substituting this value for S in the equation.

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Answer 2

Some examples of Gibbs free energy include:

  1. Chemical reactions: Gibbs free energy determines whether a chemical reaction is spontaneous or non-spontaneous.

  2. Phase transitions: Gibbs free energy governs phase transitions such as melting, vaporization, and sublimation.

  3. Biological processes: Gibbs free energy is involved in biological processes such as ATP hydrolysis, muscle contraction, and enzyme-catalyzed reactions.

  4. Electrochemical reactions: Gibbs free energy is utilized to determine the feasibility of electrochemical reactions, such as those occurring in batteries and electrolysis cells.

  5. Equilibrium constants: Gibbs free energy is used to calculate equilibrium constants for chemical reactions and phase transitions.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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