Question

Assertion: Galvanic cells convert chemical energy into electrical energy.
Reason: Redox reactions are those in which oxidation takes place at anode and reduction at cathode.
A.Both assertion and reason are correct and reason is the correct explanation for assertion.
B.Both assertion and reason are correct but reason is not the correct explanation for assertion.
C.Assertion is correct but reason is incorrect.
D.Assertion is incorrect but the reason is correct.

Answer 1

Hint: We know that the electrochemical cell, the electrode in which the oxidation takes place is an anode and the electrode in which reduction takes place is the cathode. The chemical reaction is employed in the electrochemical cell to generate electrical energy.

Complete answer:
As we know that the Galvanic cells consist of two half-cells, which convert the chemical potential energy into electrical potential energy which happens through a spontaneous chemical reaction. A Galvanic cell has the power to separate the flow of electrons through the cycle of oxidation and reduction, creating a half reaction and connecting both of them to a wire such that a path may be created for the flow of electrons across that wire. This confirms that the assertion that galvanic cells convert chemical energy into electrical energy is the correct statement.
Whereas during a redox reaction, the galvanic cell uses the energy transfer between electrons to convert chemical energy into electrical energy. The galvanic cell has the power to separate the flow of electrons through the cycle of oxidation and reduction, creating a half reaction and connecting both of them to a wire such that a path may be created for the flow of electrons across that wire. The subsequent redox reaction in the process is not natural, so for the start-up reaction. Thus, the reason statement is also correct however reason doesn’t define or explain the given assertion.
Therefore, the correct answer is option C i.e., both assertion and reason are correct but reason is not the correct explanation for assertion.

Note:
Remember that the cathode or anode is not defined in general by their respective charges. Because they may have either a positive or negative charge, and it entirely depends on that current situation. Generally, the anode is referred to as an electrode that positive current flows into from the outside.