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A solution of aluminium chloride is electrolysed for 30 minutes using a current of 2 A . The amount of the aluminium deposited at the cathode is [Given : molar mass of aluminium and chlorine are 27 ~g ~mol ⁻¹ and 35.5 ~g ~mol ⁻¹ respectively. Faraday constant .=96500 C mol ⁻¹ ]

Options

  1. A1.660 g
  2. B0.336 g
  3. C0.441 g
  4. D1.007 g

Correct answer

B. 0.336 g

Step-by-step solution

Al ¹⁺⁺+3 e ⁻ Al aligned Moles of electron & = 2 30 60 96500 & = 36 965 aligned aligned Moles of Al & = 36 3 965 & = 12 965 aligned Mass of Al = 12 965 27=0.336 gm

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