KD3203 2021-1-20 18:27
V1. Do you know electrode potential
Emf when half cell connects to standard H electrode
Standard potential
Needs 1M ions, 2 9 8 K and 100 KPa
H electrode has a wire
Of Pt, to foil covered in porous Pt
To measure potential
Connect ion to H in salt bridge
V reading is potential
System is drawn with cell diagram
Reduced form is drawn outside
Positive electrode drawn on right of inside
Chorus: When a substance has gotten reduced, in a half cell, potential
More reactive is more negative, furthest to left, potential
It’s powerful reducing agent, (electrons) flow to left
*(Set up salt bridge between two half cells, add up E cell, potential
If reaction is feasible, it’s positive potential)
V2. With standard potential
We predict feasibility of reactions
If needed, reverse potential
Satisfying reaction conditions
T times equilibrium constant
Product of moles, faraday, potential
(Repeat Chorus x2)
(Repeat *)