Correct Answer is : is a universal constant

depends on the amount of the electrolyte

depends on the current passed in the electrolyte

depends on the volume of the solvent in which the electrolyte is dissolved

None of the above / More than one of the above

Correct Answer is : is a universal constant

Test Index

BPSC 66th Prelims 27 Dec 2020 Paper

Question : 7 of 150

Marks: +1, -0

Faraday constant

depends on the amount of the electrolyte
depends on the current passed in the electrolyte
depends on the volume of the solvent in which the electrolyte is dissolved
is a universal constant
None of the above / More than one of the above

Validate

Solution:

Concept:

Faraday constant (

F

) is the electric charge carried by one mole of electrons. It is a fundamental universal constant, not dependent on experimental conditions like electrolyte amount, current, or solvent volume.

Explanation:

The value of Faraday constant is

96485\ \text{C mol}^{-1}

It is named after Michael Faraday and is derived from Avogadro's number and the elementary charge:

F = N_A \times e

The constant does not change with the amount of electrolyte, the current passed, or the solvent volume.

Options A, B, and C are incorrect because the Faraday constant is independent of these factors.

It is a universal constant like the charge of an electron or the gas constant.

Faraday's laws of electrolysis use this constant to relate charge to mass deposited, but the constant itself remains fixed.

Answer:

D. is a universal constant

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