Problem 3. A thin circular-disk earring 4.0 cm in diameter is plated with a coating of gold 0.025 cm thick from an Au bath. How many days does it take to deposit this amount of gold on one side o the earring if the current is 0.013 A (AW of gold=196.67 g/mol; density of gold = 19.3 g/cm).

Q: How many seconds are required to deposit 0.143 grams of tin metal from a solution that contains Sn2+…

A: Answer: Since, Sn2+ is getting reduced into Sn, therefore its valency factor will be 2 and its…

Q: None

A: Given Data ,The amount of current applied,i=0.657 ATime taken,t=72.5 minutes = 72.5 × 60 sec = 4350…

Q: A current of 2.18 A is observed flowing through the cell for a period of 2.95 h. Calculate the…

A: Total charge Q = total current flow (i) x time( in Sec) charge of 1 mole electroms = 1 faraday = 1 F

Q: A current of 5.65 A is passed through a Cu(NO,), solution for 1.10 h. How much copper is plated out…

A: The balanced chemical reaction is as follows:

Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.