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The tendency to metal to lose electrons or tendency of its ions to gain electrons depends upon the concentration of the ions in solution. At the same time, the tendency to lose or gain electrons is expressed in terms of electrode potentials. The value of electrode potential, thus, varies with the variation in the concentration of the ions. The quantitative relationship between the concentration of ions and electrode potentials is given by Nerst equation. For a common electrode reaction:
Mn+ + ne- M The nerst equation can be written in the two ways as + (RT/nF) In [Mn+]/[M] Or, - (RT/nF) In [Mn+]/[M]
In the present aspect, only the first form will be used in the further discussion. Converting natural logarithm (In) to log10 in the first expression, we get + (2.303 RT/nF) log [Mn+]/[M], Where, = electrode potential
= standard electrode potential with reference to SHE when concentration of Mn+ is 1 mol L-1 R = 8.314 JK-1 mol-1; T = temperature [Mn+] = molar concentration of ions; n = number of electrons gained F = Faraday constant 96500 C mol-1; [M] = concentration of metal Substituting these values, we get log [Mn+]/[M] = + (0.059/n) log [Mn+]/[M] In general, for any electrode, Ered = + (0.059/n) log [oxidized state]/[reduced state]
what do you mean by homologous series .
Calculate how much heat energy is required to raise the temperature of a cube of copper of side 2cm. from 300 to 320k. given: density=8933kg/m cube , atomic weight=63.55, cp=24j/k/
Nitrite rubbers (Gr-A or Buna-N or NBR): Nitrite rubber is prepared by the copolymerization of butadiene and acrylonitrile in emulsion systems. Properties: 1.
By who can sublimation be useful? How can it be useful?
primary and secondary nitro compounds chemical test..
(a) What is hardness of water? What do you understand by temporary and permanent hardness? OR Explain tempora
Q. Complexation Behaviour of the f-block? Ions of actinide and lanthanide elements have a strong tendency to form complexes with a variety of oxygen and nitrogen donor ligands.
explanation of the conductometric curve plotted for AgNO3 and KCL
The maximum number of electrons accommodated in 5f orbitals are: (1) 5 (2) 10 (3) 14 (4) 18 Ans: 14
Which of the following orbital is not possible: (1) 3 f (2) 4 f (3)5 f (4) 6 f Ans: 3 f
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