MHT CET202311 May 2023Morning ShiftChemistryElectrochemistryActual
Find the number of faradays of electricity required to produce 45 ~g of Al from molten Al ₂ O ₃ .
Options
- A1 ~F
- B3 ~F
- C5 ~F
- D7 ~F
Correct answer
C. 5 ~F
Step-by-step solution
Al ³⁺+3 e ⁻ Al The equation shows that 3 moles of electrons are required to produce 1 mole of Al (i.e., 27 ~g of Al ). 3 ~F of electricity is required to produce 27 ~g of Al from molten Al ₂ O ₃ . Faradays of electricity required to produce 45 ~g of Al = 3 27 45=5 ~F