Question

Which of the following is true for a galvanic cell 1. The electron flow is from the negative electrode to the positive electrode 2. The electron flow is from the anode to the cathode. 3. The electron flow is from the oxidising agent to the reducing agent through an external circuit. 1 only O 2 only O 3 only . 1 and 2 only 1, 2, and 3

Answer 1

Ans 1

Statement 1 and statement 2 are correct

Option D is the correct answer

In a galvanic cell

Loss of electrons take place from the anode and the electrode is called negative electrode

Gain of electrons take place from the cathode and the electrode is called positive electrode

Electrons are transfered from anode to cathode

At anode, oxidation reaction occurs due to loss of electrons

At cathode, reduction reaction occurs due to gain of electrons.

At the anode in oxidation reaction, reducing agent oxidizes the metal.

At the cathode in reduction reaction, oxidizing agent reduces the metal.

Electron flow take place from reducing agent to Oxidizing agent through an external circuit.

Ans 2

The half reactions are

Oxidation reaction represented by O and reduction reaction represented by R

3+1 R: Pa - PH2 4

In both reactions

P4 is reducing agent as well as oxidizing agent

Option E is the correct answer