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

Describe co-ordination covalent bond, Co-ordination covalent bond is produ...

Co-ordination covalent bond is produced by the mutual sharing of pair of electrons among two atoms contributed by only one of the combining atoms.

Classic flame photometric experiment, Classic flame photometric experiment:...

Classic flame photometric experiment: In a classic flame photometric experiment, a solution of the analyte is aspirated within the burner and dispersed into the flame as a fin

Aromaticity or aromatic character, Aromaticity or aromatic character T...

Aromaticity or aromatic character The characteristic behaviour of aromatic compounds is termed as aromaticity. Aromaticity is due to the extensive delocalisation of p-electron

100, Mixtures can always be separated by physical means. Describe how you w...

Mixtures can always be separated by physical means. Describe how you would separate the components in a mixture of table salt and sand.

Tin and lead, GROUP 14: TIN AND LEAD Tin and lead give some resemblance ...

GROUP 14: TIN AND LEAD Tin and lead give some resemblance to the lighter elements in group 14, especially Ge. Although they are uniquely more metallic in their physical and chem

Abo blood typing, sir/maam is it animals have the same type of the blood wi...

sir/maam is it animals have the same type of the blood with human beings?

Carbon an essential constituent of all organic compounds, Carbon an essenti...

Carbon an essential constituent of all organic compounds The word organic means to organs of both plants and animals and organic chemistry is the study of  the products which or

Energy of an electron in the first bohr orbit of h atom, The energy of an e...

The energy of an electron in the first Bohr orbit of H atom is-13.6eV  . The possible energy value(s) of the excited state(s) for electrons in Bohr orbits to hydrogen is(are):

How many centigrams are in 5 kilograms, Q. How many centigrams are in 5 kil...

Q. How many centigrams are in 5 kilograms? Two conversion factors are essential to solve this problem. Keep in mind that there are 1000 grams in a kilogram and 100 centigrams i

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