MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
preeti pooja Grade:
        

why on using Hg electrodes Na is deposited at cathode on electrolysis of aq NaCl?

4 years ago

Answers : (1)

Gaurav
askIITians Faculty
164 Points
										The reaction at anode :
2Cl–→ Cl2+ 2e–

The chlorine gas that results vents at the top of the outside cells where it is collected as a byproduct of the process.
The reaction at the mercury cathode :
2Na++ 2e–→ 2Na (amalgam)
The sodium metal formed by this reaction dissolves in the mercury to form an amalgam.
The anode reaction in the center cell takes place at the interface between the mercury and the sodium hydroxide solution.
2Na (amalgam) → 2Na++ 2e–
Overall Cell Reaction
2H2O + 2e–→ 2OH–+ H2
2 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: Rs. 15,000
  • View Details

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details