Home UP BOARD Question Papers NCERT Solutions Sample Papers CBSE Notes NCERT Books CBSE Syllabus

Gibbs Energy of Reaction Taking Place in an Electrochemical Cell Notes Chapter 3 Electrochemistry Chemistry Class 12

Gibbs energy of reaction taking place in an electrochemical cell chapter 3 can study by students of class 12. These definitiona and formulas of Class 12 Chemistry Chapter 3: Electrochemistry is developed and witten by our expert teachers. Chemistry formulas. Gibbs energy of reaction taking place in an electrochemical cell is prepapred and collected from varius resources to help the students.

Q-14 What is the Gibbs energy of reaction taking place in an electrochemical cell?
Electrical work done in one second is equal to electrical potential multiplied by total charge passed. If we want to obtain maximum work from a galvanic cell then charge has to be passed reversibly. The reversible work done by a galvanic cell is equal to decrease in its Gibbs energy and therefore, if the emf of the cell is E and nF is the amount of charge passed and ΔrG is the Gibbs energy of the reaction, then
Δ rG = – nFE(cell)
It may be remembered that E(cell) is an intensive parameter but ΔrG is an extensive thermodynamic property and the value depends on n. Thus, if we write the reaction
Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s)
ΔrG = -2FE(cell)
but when we write the reaction
2 Zn (s) + 2Cu2+(aq) →2 Zn2+(aq)+2Cu(s)
ΔrG = -4FE(cell)
If the concentration of all the reacting species is unity, then E(cell) = (cell) EV and we have
ΔrG_ = –nFEӨ (cell) …(1)
We have the relation
ΔrG_ = –RT ln K. … (2)
From equation (1) and (2)
–nFEӨ (cell) = –RT ln K.
EӨ (cell) = –RT/nF ln K.

Important Links

NCERT CBSE Notes Class 6 - 12 Download pdf

Ncert Solution for class 6 to 12 download in pdf

CBSE Model test papars Download in pdf

NCERT Books for Class 1- 12 Hindi & English Medium

Mathematics Biology Psychology
Chemistry English Economics
Sociology Hindi Business Studies
Geography Science Political Science
Statistics Physics Accountancy

CBSE Syllabus Class 9 to 12 Year 2021-22

Last year CBSE Question paper

Important Links

Follow Us On

Face book page ncerthelp twitter page youtube page linkdin page

Solved Last Year Question Paper

If You have any problem/query related to above page please send us your Query to ncerthelp@gmail.com with code Serial No589/101. Thanks

Please Share this webpage on facebook, whatsapp, linkdin and twitter.

Facebook Twitter whatsapp Linkdin

Copyright @ ncerthelp.com A free educational website for CBSE, ICSE and UP board.