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

Electricity need to produce one mole of copper from sulphate, The amount of...

The amount of electricity required to produce one mole of copper from sulphate solution will be how many faradays? Ans)   2 faraday of electricity is required to produce one mol

Neutrons than protons at high mass numbers because, Nuclei tend to have mor...

Nuclei tend to have more neutrons than protons at high mass numbers because: (1) Neutrons are neutral particles   (2) Neutrons have more mass than protons   (3) More neut

Define the factors influencing product development, Factors Influencing Pro...

Factors Influencing Product Development Product development is an innovative activity designed to meet the changing consumer demands. It is becoming increasingly important in

Directive effect in mono substituted benzene derivatives, Directive effect ...

Directive effect in mono substituted benzene derivatives: The substituent previously present on the benzene ring directs the incoming substituent to inhabit ortho (2 or 6), met

Calculate the activity coefficient, Calculate the activity co-efficient? ...

Calculate the activity co-efficient? The solubility of gaseous O 2 at a partial pressure of 1.01 bar and a temperature of 310.2K, ex- pressed as a concentration, is 1.07 *10 -

Atomic strucyure, Ask The frequency of one ... The frequency of one of the ...

Ask The frequency of one ... The frequency of one of the lines in Paschen series of hydrogen atom is2.340x10 11 Hz. The quantum number n 2 which produces this transition is: (1) 6

The number of electrons in cl- ion is, The number of electrons in c l -  ...

The number of electrons in c l -  ion is: (1) 19      (2) 20      (3) 18     (4) 35 Ans: 18

Degree of hardness, DEGREE OF HARDNESS:   The degree of hardness o...

DEGREE OF HARDNESS:   The degree of hardness of water is conveniently expressed in terms of equivalent amount of CaCO 3 . Although hardness of water is never present in th

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