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

Maximum number of unpaired electron, Which of the following has maximum num...

Which of the following has maximum number of unpaired electron (atomic number of Fe 26): (1) Fe          (2) Fe (II)       (3) Fe (III)               (4) Fe (IV) An

Application of mesomeric effect, Application of mesomeric effect (A) Lo...

Application of mesomeric effect (A) Low reactivity of vinyl halides and aryl, (B) The acidic behavior of carboxylic acids, (C) Basic character comparison of aniline and e

Draw a typical triglyceride, Draw a  typical triglyceride and name its bui...

Draw a  typical triglyceride and name its building blocks. Mark centres of chirality.   The reaction cascade exact to fatty acid degradation is called "β-oxidation". It take

Standard electrode potential, why the hydrogen gases are used platinium pla...

why the hydrogen gases are used platinium plate in she

Canizzaro rex., Why 2-methyl propanal gives canizzaro Rex.

Why 2-methyl propanal gives canizzaro Rex.

Help, While studying evolution, a student comes across a cladogram that inc...

While studying evolution, a student comes across a cladogram that includes clades like amphibia, reptilia, aves, and mammalia. What must be the basal clade?

Value of x, x grams of calcium carbonate was completely burnt in air.the we...

x grams of calcium carbonate was completely burnt in air.the weight of solid residue formed is 28 g.what is the vlue of x in grams?

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