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

What are the primary source of energy, Q. What are the primary source of en...

Q. What are the primary source of energy ? Oils and fats form an integral part of the dietaries the world over. In the body they are the primary source of energy. As you know,

Determine the gluten content in the of flour, Q. Determine the gluten conte...

Q. Determine the gluten content in the sample of flour? After undertaking this activity, you will be able to: • assess the gluten content the given sample of flour, • c

Illustrate law of equilibrium and equilibrium constants, Q. Illustrate Law ...

Q. Illustrate Law of Equilibrium and Equilibrium Constants? Ans. The general equation for a reversible reaction is given by aA + bB -> cC + dD The law of equilibrium

Concerted Pericyclic Reactions, Predict the regiochemistry and stereochemis...

Predict the regiochemistry and stereochemistry of the following cycloaddition reactions and indicate the basis for your prediction.

Ozone layer, if the ozone layer distroyed then earth cool why

if the ozone layer distroyed then earth cool why

Polarography, Describe the following electrochemical methods in terms of th...

Describe the following electrochemical methods in terms of their working principles instrumentation and applications i. Potentiometry ii. polarography iii. Conductometry

Acid, all alkalis are bases but all bases are not alkalies?

all alkalis are bases but all bases are not alkalies?

Why a covalent bond is directional, Why a covalent bond is directional?  ...

Why a covalent bond is directional?  Covalent bond is formed as a result of pairing of two electrons in atomic orbitals of two atoms. Bond then must lie along the direction of

Lactic acid, What are gredients for chemical and physical properties in lac...

What are gredients for chemical and physical properties in lactic acid?

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