badge image

Enroll For Free Now & Improve Your Performance.

×
User Icon
User Icon
User Icon
User Icon
User Icon

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
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
Grade: 12

                        

What is liquid junction potential? How does it arise? How does salt bridge help reduce liquid junction potential? What is transfer no.?

5 years ago

Answers : (1)

Aarti Gupta
askIITians Faculty
300 Points
							Dear student kindly post your the questions one by one--
Liquid junction potential or diffusion potential is the potential which develops when two solutions of different concentrations are in contact with each other,then more concentrated solution will have a tendency to diffuse into the less concentrated one.The rate of diffusion of each ion will be roughly proportional to its speed in an electric field.If the anions diffuse more rapidly than the cations,they will diffuse ahead into the dilute solution,leaving the latter negatively charged and the concentrated solution positively charged which will result in an electrical double layer of positive and negative charges at the junction of the two solutions.Thus at the point of junction,a potential difference will develop because of the ionic transfer.This potential is called liquid junction potential whose magnitude depends on the relative speeds of the ions' movement.
Salt bridge minimizes this diffusion potential,that develops when any two phases (like the two solutions) are in contact.This potential adds to the cell voltage and introduces a degree of uncertainity of cell voltage measurements.With the salt bridge, we create two liquid junction potentials,but they tend to cancel each other out.


5 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 141 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

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