EMF of cell Ecell -A- E rd -cathode - E red -anodeB- E red -cathode - E red - anodeC- E red -anode - E red -cathodeD- E oxd -anode - E oxd -cathode

The correct options are B (E^∘_red)_cathode (E^∘_red)_anode D (E^∘_oxd)_anode (E^∘_oxd)_cathodeEMF of cell is defined as difference between reduction potent ...

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Byju's Answer

Standard X

Chemistry

Electrochemical Series

EMF of cell E...

Question

EMF of cell $(E_{c e l l}^{\circ}) =$

(E_{r d}^{\circ})_{c a t h o d e} + (E_{r e d}^{\circ})_{a n o d e}

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(E_{r e d}^{\circ})_{c a t h o d e} - (E_{r e d}^{\circ})_{a n o d e}

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(E_{r e d}^{\circ})_{a n o d e} - (E_{r e d}^{\circ})_{c a t h o d e}

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(E_{o x d}^{\circ})_{a n o d e} - (E_{o x d}^{\circ})_{c a t h o d e}

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Solution

The correct options are
B $(E_{r e d}^{\circ})_{c a t h o d e} - (E_{r e d}^{\circ})_{a n o d e}$
D $(E_{o x d}^{\circ})_{a n o d e} - (E_{o x d}^{\circ})_{c a t h o d e}$
EMF of cell is defined as difference between reduction potential of cathode and anode.
$∴ E M F = (E_{r e d}^{\circ})_{c a t h o d e} - (E_{r e d}^{\circ})_{a n o d e} . . . . (1)$
$(E_{r e d}^{\circ})_{a n o d e} = - (E_{r e d}^{\circ})_{a n o d e} . . . . (2)$
$(E_{r e d}^{\circ})_{c a t h o d e} = - (E_{o x d}^{\circ})_{a n o d e} . . . . (3)$
Substituting (2) & (3) in (1)
$E M F = (E_{r e d}^{\circ})_{a n o d e} - (E_{o x d}^{\circ})_{c a t h o d e}$

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Similar questions

Tollen’s reagent is used for the detection of aldehyde, when a solution of $A g N O_{3}$ is added to glucose with $N H_{4} O H$ then gluconic acid is formed.

$A g^{+} + e^{-} \to A g;$ $E_{r e d}^{\circ} = 0.8 V$

$C_{6} H_{12} O_{6} + H_{2} O \to C_{6} H_{12} O_{7}$ (Gluconic acid) $+ 2 H^{+} + 2 e; E_{o x d}^{\circ} = - 0.05 V$

$[A g (N H_{3})_{2}]^{+} + e^{-} \to A g (S) + 2 N H_{3}; E_{r e d}^{\circ} = - 0.337 V$