Question

Q12 in electrolysis, if you are passing
current of 30 A for 30 minutes
through a copper sitesi
then identify the mass of sperma
would be deposited
Give Atomic mass of Ou is 6.5​

Answer 1

Answer:

The electrode reaction are: 1 moleCu2 + + 2 × 96500 C2e-→ Cu (Cathode) Cu × Cu2 + + 2e- (Anode) Thus, cathode increases in mass as copper is deposited

Answer 2

Given:

The electric current passed = 30A

The time electric is passed = 30 minutes = 180 seconds

The molar mass of copper = 63.5 g/mol

To Find:

The mass of metal deposited.

Solution:

The copper ion in the solution is reduced to a copper atom.

Cu²⁺ + 2e⁻ → Cu

⇒ 2 Faraday is required to produce 1 mole of copper.

⇒ 2 Faraday = 2 × 96500 Coulombs

Total charge passed through the solution = Q =30 × 180 =5400Coulombs

So, 193000 C charge produces mass = 63.5 g of copper

⇒ 5400 C charge produces mass = (63.5 × 5400) / 193000 g of Cu

⇒ Total mass of copper deposited = 1.78 g

Hence, the total mass of copper deposited is equal to 1.78 grams.