Ionic theory and electrolysis questions | form three Chemistry

How long must a current of 4.00 A be applied to a solution of to produce 2.0 grams of copper metal?

1. 2.4 x 10⁴s
2. 1.5 x 10³s
3. 7.6 x 10²s
4. 3.8 x 10 ²s
5. 12 x 10⁴s.

Answer / Solution

UNSOLVED

1. Define the following terms

1. Anode
2. Cathode

2. State Faradays second law of electrolysis

Answer / Solution

UNSOLVED

A steady current of 2.5A  was passed for 15 minutes through two different types of solutions namely copper sulphate and Silver Nitrate.

1. Calculate the masses of copper and silver liberated
2. From the masses in (i) What were the number of moles of each substance liberated?
3. What is the ratio in moles of Cu and Ag liberated in whole numbers?

Answer / Solution

UNSOLVED

State three industrial application of electrolysis.

Answer / Solution

UNSOLVED

1. 289500 coulombs were required to deposit one mole of a metallic element Q from its aqueous salt solution. Calculate the valency of Q.
2. The following experiment was used to electroplate a metallic neck chain. Study it and answer the question that follows:

Answer / Solution

UNSOLVED