Question

The amount of substance liberated when 1 ampere of current is passed for 1 second through an electrolytic solution is called:
A. Electromotive equivalent
B. Faraday’s equivalent
C. Electrochemical equivalent
D. None of the above

Answer 1

Hint: Electrolytic solutions are those solutions which are capable of conducting an electric current. A substance which is added to water and shows conductivity is known as an electrolyte. The common example of an electrolyte is ordinary salt i.e. sodium chloride.

Complete answer: To satisfy the statement given let's discuss all the terms given in the option one by one.
-Electromotive equivalence generally represented by E or emf can be defined as the energy per unit electric charge that is imparted by an energy source like battery or electric generator. The work done on a unit of electric charge or we can say that the energy gained per unit electric charge is the electromotive force.
-Faraday equivalents generally represent the magnitude of electric charge per mole of the electron. Faraday is equivalent to the Faraday constant which is denoted by the symbol F. Faraday equivalent has fixed value 96485.33289 C $mo{{l}^{-1}}$. It is generally used in the electrolysis process.
-Electrochemical equivalent is abbreviated as ${{E}_{eq}}$ and defined as the mass of the substance deposited to one of the electrodes when a current of 1 Ampere is passed for 1 Second. The electrochemical equivalent of an element is measured with a voltmeter.

Hence we can conclude that option C is the correct answer.

Note: An electrolyte is a substance that produces an electrically conducting solution when dissolved in a polar solvent such as water. The dissolved electrolyte separates into cations and anions i.e. positively and negatively charged species which disperse uniformly through the solvent. Electrically such solutions are neutral in nature.