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

Platinum crystal structure, 1.  Consider a platinum crystal structure (FCC,...

1.  Consider a platinum crystal structure (FCC, R Pt = .139 nm). a.  Sketch the (100), (110), and (111) planes (including the atoms in the second layer if they can be observed

What are enantiomers and diastereomers, What are enantiomers and diastereom...

What are enantiomers and diastereomers? Differentiate among chiral and achiral molecules. Give an state of Reimer-Tiemann reaction.  How is Bakelite made and what is its majo

When an electron jumps from lower to higher orbit energy, When an electron ...

When an electron jumps from lower to higher orbit, its energy : (1) Increases (2) Decreases (3) Remains the same (4) None of these Ans:  Increases

Crystal by anion and cation, Bond formed in crystal by anion and cation is:...

Bond formed in crystal by anion and cation is: (1) Ionic    (2) Metallic  (3) Covalent    (4) Dipole Ans:  Ionic

Fehlings test, what is fehlings test and its reagent?

what is fehlings test and its reagent?

Experiment of distilled water, Distilled water A kettle can be used to ...

Distilled water A kettle can be used to give boiling water, which is then condensed in a jam jar fitted with a big cork and immersed in a pan of cold water. Rubber tubing, adhe

Fevorskii reaction, Ask what are the benefit of fevorskii reaction questio...

Ask what are the benefit of fevorskii reaction question #Minimum 100 words accepted#

Hi, What are the application of photochemistry in modern technology?

What are the application of photochemistry in modern technology?

I need organic chemistry exams in pdf form, I need organic chemistry exams ...

I need organic chemistry exams in pdf form Project Description: Hi, i need someone to get 100 unique organic chemistry exams from US universities and colleges. The needs f

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