Question

Faraday constant:

• A. depends on the amount of the electrolyte
• B. depends on the current in the electrolyte
• C. is a universal constant
• D. depends on the amount of charge passed through the electrolyte

Hint:

Faraday constant does NOT depend on experimental conditions — it is fixed.

Answer 1

The Correct Option is C

The Faraday constant is a fundamental constant critical in the field of electrochemistry and refers to the charge of one mole of electrons.

• The Faraday constant \(F\) is defined as the amount of electric charge carried by one mole of electrons. Numerically, it is approximately \(96485 \, \text{C/mol}\). This value is derived from the product of Avogadro's number and the elementary charge of an electron.
• Since it is a constant, it does not depend on the amount of electrolyte, current, or the charge passed through the electrolyte. Instead, it remains the same universally across all conditions, thus leading to the classification of the Faraday constant as a universal constant.

The other options are incorrect because:

• The amount of electrolyte is a measure of how much substance is present for electrolysis but doesn't impact the numerical value of the Faraday constant.
• The current in the electrolyte signifies how many electrons flow per unit time, which again doesn't affect the constant.
• Charge passed through the electrolyte is related to the process of electrolysis but not to the definition or value of the Faraday constant.

Hence, the correct answer is: is a universal constant.