Find the mass of Zn metal deposited at the cathode during the passage of 10 amperes current through its salt solution for 10 minutes. [ Molar mass of Zn = 65.4 g mol ⁻¹ & For the reaction of Zn, mole ratio = 1/2 ]

Step-by-step solution

Given: Current I = 10 A Time t = 10 minutes = 10 60 = 600 s Molar mass of Zn M = 65.4 g mol ⁻¹ Valency factor n = 2 (since mole ratio is 1/2 ) Faraday's constant F = 96500 C mol ⁻¹ According to Faraday's first law of electrolysis: m = M nF It Substituting the values: m = 65.4 2 96500 10 600 m = 65.4 6000 193000 m = 392.4 193 2.03 g The closest value is 2.0 g. Answer: 2.0 g