Electrode Potential

Chemistry

definition

Redox electrode

It consist of metal wire serving as an inert electrode immersed in a solution containing the ions of the same substance in two valency states.

definition

Electrode potential

The potential difference of two half cells or electrodes is called as electrode potential.

definition

Oxidation and reduction potential

The potential associated with a oxidation reaction is called as oxidation potential and the potential associated with reduction reaction is called as reduction potential.

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Galvanic Cell

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Measuring Electrode Potential

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Important Questions

Calculate the potential of hydrogen electrode in contact with a solution whose is .

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Depict the galvanic cell in which the reaction takes place. Further show:
(i) Which of the electrode is negatively charged?
(ii) The carriers of the current in the cell.
(iii) Individual reaction at each electrode.

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Predict the products of electrolysis in each of the following:
(i) An aqueous solution of with silver electrodes.
(ii) An aqueous solution of with platinum electrodes.
(iii) A dilute solution of with platinum electrodes.
(iv) An aqueous solution of  with platinum electrodes

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Describe the construction and working of calomel electrode.

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Draw a labelled diagram of 'Standard Hydrogen Electrode'.

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a) Draw labelled diagram of Standard Hydrogen Electrode ( SHE ).
Write its half cell reaction of value.
b) Calculate for the following reaction :
.
(Given : ).

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The standard reduction potentials at 298 K for the following half-cell reactions are given:
       
           
         
   
Which one of the following is the strongest reducing agent?

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The solution in a beaker turns blue if:

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Calculate the electrode potential at a copper electrode dipped in a solution of copper sulphate at . The standard electrode potential of system is at .

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Saturated solution of is used to make salt bridge because:

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