Entropy and free energy, Chemistry

Assignment Help:

 

Entropy (S) is a molecular 'disorder', or more precisely 'the number of microscopic arrangements of energy possible in a macroscopic sample'. Entropy depends strongly on the state and increases with rise in temperature.

Entropy changes (ΔS) are positive for reactions that generate gas molecules. The Second Law of Thermodynamics defines that the total entropy always increases in a spontaneous process, and reaches a maximum value at equilibrium. To apply this to chemical reactions it is necessary to include entropy changes in the surroundings caused by heat output or input. Both external and internal changes are taken account of by defining the Gibbs free energy change (ΔG): for a reaction performing at constant temperature.

 

 

 

2233_Untitled.png


Related Discussions:- Entropy and free energy

Molecular view of solution formation, Molecular View of Solution Formation ...

Molecular View of Solution Formation See the Result by zoom button   Ionic Solution

What are the objectives of heat treatment of metals, What are the objective...

What are the objectives of heat treatment of metals? Objectives of heat treatment- Cause relief of internal stresses developed during cold working, welding, forging, cas

Metallurgy, the method used for concentration of tin stone is

the method used for concentration of tin stone is

10th grade, Hello. Do you know the rubric of what I need to know about chem...

Hello. Do you know the rubric of what I need to know about chemistry because I am taking Chemistry this fall and I would like to know the basics

What is oxidation numbers, Q. What is Oxidation Numbers? Ans. Chem...

Q. What is Oxidation Numbers? Ans. Chemists find it useful to describe the oxidation states of an element by means of oxidation numbers. The oxidation number of an element

Petrochemicals - characteristics of hydrocarbons, Petrochemicals - Characte...

Petrochemicals - Characteristics of Hydrocarbons All such types of chemicals that are derived from petroleum or natural gas known as petrochemicals. Some chemicals that are fou

Properties of gases, Properties of Gases Gases are easily expandable ,c...

Properties of Gases Gases are easily expandable ,compressible unlike solids and liquids. Gases are measurured in pressure.Pressure is defined as force exerted per unit area of

Potential use of magnesium in biomedical implant application, Magnesium is ...

Magnesium is the lightest of the structural metals. While this low density is an attractive property, magnesium also has a high corrosion rate that has often been seen as a disadva

Mole concept, The difference in the mass of 100 moles of sodium atoms and s...

The difference in the mass of 100 moles of sodium atoms and sodium ions is 5.48002grams .compute the mass of an electron

Salt solution, A tank having 100 kg of a 60% brine (60% salt) is ?lled with...

A tank having 100 kg of a 60% brine (60% salt) is ?lled with a 10% salt solution at the rate of 10 kg/min and 78°F.Solution is detached from the tank at the rate of 15 kg/min.  Fin

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd