How long would it take to deposit 9.38 g of copper (molar mass 63.55 g/mol) at the cathode of an electrolytic cell, if a current of 23.2 A is passed through an aqueous solution of CUSO4?

Chlorine, Cl2, is produced commercially by the electrolysis of aqueous sodium chloride. The anode reaction is 2Cl(aq)Cl2(g)+2e How long will it take to produce 2.00 kg of chlorine if the current is 5.00 102 A?

Electrolysis of a solution of CuSO4(aq) to give copper metal is carried out using a current of 0.66 A. How long should electrolysis continue to produce 0.50 g of copper?

An aqueous solution of an unknown salt of gold is electrolyzed by a current of 2.75 amps for 3.39 hours. The electroplating is carried out with an efficiency of 93.0%, resulting in a deposit of 21.221 g of gold. a How many faradays are required to deposit the gold? b What is the charge on the gold ions (based on your calculations)?

Hydrazine, N2H4, has been proposed as the fuel in a fuel cell in which oxygen is the oxidizing agent. The reactions are N2H4(aq) + 4 OH(aq) N2(g) + 4 H2O() + 4e O2(g) + 2 H2O() + 4e 4 OH(aq) (a) Which reaction occurs at the anode and which at thecathode? (b) What is the overall cell reaction? (c) If the cell is to produce 0.50 A of current for 50.0 h, calculate what mass in grams of hydrazine must be present. (d) Calculate what mass (g) of O2 must be available to reactwith the mass of N2H4 determined in part (c).