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In a galvanic cell...

In a galvanic cell

A

oxidation occurs at cathode

B

reduction occurs at anode

C

electrical energy produces chemical reaction

D

chemical reaction produces electrical energy

Text Solution

Verified by Experts

The correct Answer is:
D
A galvanic cell is an electrochemical cell that con-verts the chemical energy of a spontaneous redox reaction into electrical energy. In this device the Gibbs energy of the spontaneous redox reaction is converted into electrical work which may be used for running a motor or other electrical fadfets like heater, fan, geyser, etc.
The electrode at which oxidation takes place is called the anode while the electrode at which reduction takes place is called the cathode.
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Knowledge Check

  • In an galvanic cell , the electrons flow

    A
    from cathode to anode
    B
    from anode to cathode
    C
    from anode to solution
    D
    from solution to cathode

  • When a galvanic cell starts operating, with passage of time,

    A
    spontaneous character of the cell decreases, `E_("cell")` decreases
    B
    reaction quotient 'Q' decreases, `E_("cell")` increase
    C
    Useful work obtainable from the cell increases
    D
    as cell stops producing voltage, Q = K.

  • Which of the following statements is correct ? I. In galvanic cell, anode is positive terminal II. In galvanic cell, cathode is negative terminal III. In galvanic cell, anode is negative terminal IV. In galvanic cell, cathode is positive terminal

    A
    I and II
    B
    III and IV
    C
    Only I
    D
    Can't be predicted