In electrolysis, 0.635 g of Cu (atomic mass 63.5 g/mol) is deposited from CuSO₄ using 0.5 A for 3860 s. What is the perc
Charge = 0.5 × 3860 = 1930 C . Theoretical mass = (1930/96500) × (63.5/2) = 0.02 × 31.75 = 0.635 g . Efficiency = (Actual/Theoretical) × 100 = (0.635/0.635) × 100 = 100% .
Ref: NCERT Class 12 Chemistry > Chapter 2: Electrochemistry > Topic: Electrolytic Cells and Electrolysis and Faraday's Laws