Question

The electrochemical equivalent of a material in an electrolyte depends on
A. The nature of the material
B. The current through the electrolyte
C. The amount of charge passed through the electrolyte
D. The amount of material present in electrolyte

Answer 1

Hint: Electrochemical equivalent is used in Faraday’s laws of electrolysis in which electric current is made to pass through an aqueous solution so that pure substances can be obtained.

Complete Step by Step Answer:
According to Faraday’s First Law of electrolysis, the amount of substance that gets deposited at any of the electrodes during the electrolysis depends on the amount of charge passed through it directly. Mathematically, Faraday’s First law of electrolysis can be written as
m=ZQ
Where ‘m’ is the mass of the substance depositing or liberating at the electrode
Z is the proportionality constant or electrochemical equivalent.
Q is the amount of electricity passing through the electrolyte
Electro chemical equivalent of a substance is given by the ratio of the relative atomic mass and its valency. This depends on the nature of the material used in the chemical reaction.
Therefore, the electrochemical equivalent of a material in an electrolyte depends on the nature of the material
Hence, Option A is the correct answer.

Note: In electrolysis, electrolytic cells are used which convert electric energy into chemical potential energy. Out of two electrodes, cathode is always negative while the anode is always positive in these types of cells. Since electrolysis is an oxidation reduction reaction which is non-spontaneous, the point where the current enters or leaves is known as the electrodes. Electrolysis takes place due to an electrolyte which is a liquid salt solution of the metal. This procedure is used to separate and obtain pure substances from a solution by passing an electric current.