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

Explain about monohalides, Q. Explain about Monohalides? Monohalides of...

Q. Explain about Monohalides? Monohalides of the type M 2 X 2 , (where X = F, C1 and Br) are formed only by 0. S and Se. Oxygen monofluoride decomposes above 25 K. These monoha

Give the general formula of organic acids, Q. Give the general formula of O...

Q. Give the general formula of Organic Acids? Ans. Organic acids have the general formula RCOOH. The R- is an alkyl group or hydrogen. The functional group is -COOH and

#molarity, #sulphuric acid can be made with concentration of 99%.however fo...

#sulphuric acid can be made with concentration of 99%.however for diferent industrial requirement ,62% h2so4 is used which has density of 1.55 g/ml.calculate the molarity,molality

Molar conductivity, what is molar conductivity at infinite dilution

what is molar conductivity at infinite dilution

Chemical analysis - qualitative analysis, Qualitative analysis A salt c...

Qualitative analysis A salt contains two parts defined as radicals. The positively charged part of a salt (cation) that has been derived from a base is known as basic radical a

Degree of unsaturation procedure, what is the procedure on how to get degre...

what is the procedure on how to get degree of unsaturation in a fruit

Free radical aromatic substitution - hydrocarbon, Free radical aromatic sub...

Free radical aromatic substitution - Hydrocarbon The aromatic substitution reactions that follow free radical mechanisms are extremely few and have limited synthetic value. Alt

Salt analysis, Why NH4Cl and NH4OH are added to the test solution?

Why NH4Cl and NH4OH are added to the test solution?

Drying of organic substances, Drying of Organic Substances- purification of...

Drying of Organic Substances- purification of organic compounds Several solids are dried first by pressing them gently in between folds of filter papers. Compounds that neither

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