Скачать или смотреть Electrochemistry for A'Levels : Part 5 : Electrochemical Cell & Cell Notation

To join our Free Trial Lesson, Join our Whatsapp Community Now! https://chat.whatsapp.com/CWSRaMi4i3w...
or msg at +92 323 509 4443

To purchases recorded courses with notes
https://megalecture.com/courses/ In this lecture, we will discuss the construction of an electrochemical cell. The cell is made up of two electrodes. In the example above, a Na/Na+ electrode is connected to a Ag/Ag+ electrode via a volt meter. A salt bridge is then connected between the two electrodes to complete the circuit (flow of charges).

Electrons flow from the lower potential electrode (Na/Na, E=-2.71V) to the higher potential electrode (Ag/Ag+, E=0.80V).

Therefore the lower potential electrode (Na/Na+), loses electrons and gets oxidized while the higher potential electrode (Ag/Ag+), gains electrons and gets reduced.

Na --- Na+ + 1e
Ag+ + 1e --- Ag

The overall cell reaction is :
Na + Ag+ --- Na+ + Ag

The overall E cell can be calculated by finding the potential difference between the two electrodes (higher potential - lower potential).

In the end we will learn to write the cell notation for an electrochemical cell.

To View Fahad's Academy Youtube Channel, Visit:
   / fahadsacademy.  .
For more Lecturers and Courses, Visit Our Site:
http://www.fahadsacademy.com
For Tutoring Queries, Fahad's Academy Offers the Best Subject Specialist for Online Classes in Math, Physics, Chemistry, Biology, Economics, etc
Email: fahadsacademy@gmail.com
Telephone: (00) 92 323 5094443