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Faraday's Second Law

In an electro...

Question

In an electrochemical cell, the electrode having a lower reduction potential will act as:

A

Anode

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B

Salt bridge

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C

Electrolyte

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D

Cathode

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Solution

The correct option is A
Anode

In an electrochemical cell,, the electrode having a lower reduction potential will act as anode because it will have a higher tendency to lose electrons and lower tendency to gain electrons.

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Q. Assertion :Anode is the electrode at which oxidation occurs and cathode is the electrode at which reduction occurs. Reason: Anode and cathode in electrochemical cells and electrolytic cells have opposite polarity.

Q. Assertion :A standard hydrogen electrode is also called reversible electrode. Reason: Standard hydrogen electrode can act both as anode as well as cathode in an electrochemical cell.

Q. Consider the following relations for emf of an 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 = (Reductional potential of anode) + (Reduction potential of cathode) (i v)) EMF of cell = (Oxidation potential of anode) - (Oxidation potential of cathode)

Q. Consider the following relations for emf of an 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 relation(s) is correct?

Q. In the electrolytic refining of Copper (electrolyte is

C u S O_{4}

H_{2} S O_{4}

;Pure Cu cathode and Impure Cu anode), metallic impurities having ___ than Cu are deposited as anode sludge.

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