Define standard reduction potential, Chemistry

Assignment Help:

Q. Define standard reduction potential ?

Ans. The standard reduction potential, Eo

As we have seen in the example of a chemical cell in the previous section, the redox reaction "drives" electrons through the circuit. Volts, or voltage, is a measure of the potential for a substance to produce electricity. The tendency for a substance to be reduced is measured by its standard reduction potential, Eo. The more positive the standard reduction potential, the more likely the substance will undergo a reduction reaction.

The following table lists the standard reduction potentials of the commonly used half-cells:

135_reduction potential.gif

By definition, 2H+ + 2e- -> H2 is the standard reference cell. The value of its reduction potential Eois zero. All other reduction half-reactions are measured in reference to this value.

In general, the potential of a chemical cell to produce electricity is related to the difference of the half-cell potentials for each of the substances that are involved in the reduction and oxidation half-cells.


Related Discussions:- Define standard reduction potential

What is allotropy, What is Allotropy  If the change in structure is rev...

What is Allotropy  If the change in structure is reversible then the polymorphism is called as 'allotropy'.Allotropy (Gr. allos, other, and tropos, manner) is a behavior exhibi

F-block elements, similarities between the latter actinides and latter lant...

similarities between the latter actinides and latter lanthanides

Atoms and molecules, which postulate of daltons theory can explain the law ...

which postulate of daltons theory can explain the law of definite proportions

General tests of esters, General Tests of Esters (a) Esters has sweet s...

General Tests of Esters (a) Esters has sweet smell (b)  Esters is neutral towards litmus (c) A pink colour is developed while one or two drops of phenolphthalein are adde

#titleadegree of association and dissociation of solute.., Ask question #Mi...

Ask question #Minimum association and dissociation of solute 100 words accepted#

Dual nature of particles was proposed, Dual nature of particles was propose...

Dual nature of particles was proposed by: (1) Heisenberg (2) Lowry (3) de-Broglie     (4) Schrodinger Ans:de-Broglie

Group1, excration of group1 from its materials

excration of group1 from its materials

Explain emulsion stability, Q. Explain Emulsion stability? The stabilit...

Q. Explain Emulsion stability? The stability of an emulsion is determined by the viscosity of the continuous phase, presence of an emulsifier, the concentration of the emulsifi

S block elements.., lithium and beryllium markedly differ from other member...

lithium and beryllium markedly differ from other members of their respective groups.

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