How are Gibbs energy change and entropy change related?

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asked Nov 17, 2023 in Science by Kevetia (2,120 points)
How are Gibbs energy change and entropy change related?

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answered Jan 17 by Ithinkaboutu (2,030 points)
Gibbs energy change and entropy change are related through the equation of ΔG = ΔH - TΔS, where ΔH is the enthalpy change and T is the absolute temperature.

So essentially, a positive entropy change contributes to a negative Gibbs energy change, making a process more likely to be spontaneous at a given temperature.

Gibbs free energy is what combines the concepts of enthalpy (heat change) and entropy (disorder) into a single value that indicates the spontaneity of a process.

And a negative ΔG value signifies a spontaneous process, meaning the reaction will proceed without external intervention.

Also the influence of entropy on Gibbs free energy is amplified at higher temperatures due to the "TΔS" term in the equation.

Entropy is what measures the degree of disorder or randomness within a system.

Entropy is about the distribution of that energy and it's level of disorder.

A good example of entropy is the messiness that naturally occurs overtime such as when a child leaves toys scattered around their room.

And instead of the child putting the toys away neatly, the more time passes then more messy and more disorganized things get.

It's like how entropy works in the world around us.

Things get more mixed up and disordered on their own, unless you actively clean things up.

Entropy law is what refers to the second law of Thermodynamics, which states that in an isolated system, the total entropy which is a measure of disorder will always remain constant over time.

This means that systems naturally tend towards greater disorder unless external energy is applied to maintain order so essentially things will naturally become more disorganized without intervention.

In other words the entropy law means that a system will never get more ordered without outside intervention.

The 3 laws of energy are the first law is that energy cannot be created nor can energy be destroyed, but only transformed from one form to another which is also known as the conservation of energy.

The second law of energy is the entropy or disorder of an isolated system always increases over time and means that natural processes tend towards increasing disorder.

The third law of energy is that the entropy of a perfect crystal at absolute zero temperature is zero.

The 1st Law of Thermodynamics states that Energy cannot be created or destroyed.

The 2nd Law of Thermodynamics states that for a spontaneous process, the entropy of the universe increases.

And the 3rd Law of Thermodynamics states that A perfect crystal at zero Kelvin has zero entropy.

Ralph H. Fowler is who gave Zeroth Law of Thermodynamics in the 1930s.

Ralph H. Fowler coined the term zeroth law to indicate that it is a fundamental concept that underlies the other laws of thermodynamics, even though it was formulated later than others.

The definition of the Zeroth Law is if two systems are each in thermal equilibrium with a third system, then they're also in thermal equilibrium with each other.

The zeroth law of Thermodynamics provides a basis for defining temperature as a measurable quantity.

Although the zeroth law of thermodynamics was actually discovered in 1871 by the Scottish scientist James Clerk Maxwell.

The zeroth law of thermodynamics states that 'if two thermodynamic systems are both in thermal equilibrium with a third system it means the two systems are also in thermal equilibrium with one another.

The 1st Law of Thermodynamics is that Energy cannot be created or destroyed.

The 2nd Law of Thermodynamics is that for a spontaneous process, the entropy of the universe increases.

And the 3rd Law of Thermodynamics is that A perfect crystal at zero Kelvin has zero entropy.

Thermodynamics is the science of the relationship between heat, work, temperature, and energy.

In broader terms, thermodynamics also deals with the transfer of energy that occurs from one place to another and from one form to another.

The key concept of thermodynamics is that heat is a form of energy corresponding to a definite amount of mechanical work.

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