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Consider the following relations for emf...

Consider the following relations for `emf` of a electrochemical cell
(i) emf of cell = (Oxidation potential of anode)-(Reduction potential of cathode)
(ii) emf of cell = (Oxidation potential of anode)+(Reduction potential of cathode)
(iii) emf of cell = (Reduction potential of anode)+(Reduction potential of cathode)
(iv) emf of cell = (Oxidation potential of anode)-(Oxidation potential of cathode)
Which of the above realtions are correct?

A

(3) and (1)

B

(1) and (2)

C

(3) and (4)

D

(2) and (4)

Text Solution

Verified by Experts

The correct Answer is:
D
`E_("cell")= E_("cathode (red)")^(0)- E_("anode(red)")^(0) or E_("cell")= E_("cathode(red)")^(0)- E_("anode(oxid)")^(0) or C_("cell")= E_("anode(oxid)")^(0)- E_("cathode(oxid)")^(0)`
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