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MHT CET Medical202622 April 2026Morning ShiftChemistryElectrochemistryActual

Calculate the amount of electricity required to deposit 1 mole of aluminum from a solution of AlCl ₃ .

Options

  1. A0.33 Faraday
  2. B1 Faraday
  3. C3 Faraday
  4. D1.33 Faraday

Correct answer

C. 3 Faraday

Step-by-step solution

The dissociation of AlCl ₃ gives Al ³⁺ ions. The reduction reaction at the cathode is: Al ³⁺ + 3e⁻ Al From the stoichiometry of the reaction, 1 mole of Al requires 3 moles of electrons. Since 1 mole of electrons carries a charge of 1 Faraday, the amount of electricity required is 3 Faraday. Answer: 3 Faraday

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