Question

Select the correct statements about galvanic cells.

• A. Electrons are fed into anode by the oxidation reaction that takes place at the electrode.
• B. The anode pushes these electrons into the external circuit and thus, acts as a source of negative charge.
• C. The cathode acts as an electron sink and thus, called positive electrode.
• D. The algebraic sum of E${}_{OP}$ of anode and E${}_{OP}$ of cathode gives the +ve value for spontaneous process.

Answer 1

Answer: (A), (B), (C)

Electrons are fed into anode by the oxidation reaction that takes place at the electrode.
The cathode acts as an electron sink and thus, called positive electrode.
The anode pushes these electrons into the external circuit and thus, acts as a source of negative charge.

In a galvanic cell, the electrons move from anode to cathode through external circuit. Thus anode is the negative electrode and cathode is the positive electrode.

These, electrons are obtained by the oxidation reaction. This oxidation occurs at anode.

Anode is the source of the negative charge and cathode is the sink.

Thus, the options A to C are correct.

The algebraic sum of $E_{OP}$ of anode and $E_{RP}$ of cathode gives the +ve value for spontaneous process. Thus, the option D is incorrect.