ELECTRODE POTENTIALS

Question 1

what are the standard conditions for a half-cell

Answer 1

1M concentration of the ions in solution
298K
1atm or 100KPa pressure

Question 2

what happens at the negative electrode

Answer 2

More reactive metals LOSE electrons and get oxidised

Question 3

what happens at the positive electrode

Answer 3

Less reactive metals GAIN electrons and get reduced

Question 4

what is the electrode potential of the SHE is given as

Answer 4

0.00 V

Question 5

standard cell potential equation

Answer 5

Eɵ cell = Eɵ most positive - Eɵ least positive

Question 6

which electrode does oxidation occur

Answer 6

at the most negative electrode

Question 7

which electrode does reduction occur

Answer 7

at the most positive electrode

Question 8

what is the cell potential affected by

Answer 8

current temperature
pressure of any gases
solution concentrations

Question 9

what are the three types of cells

Answer 9

primary - non-rechargeable

secondary - rechargeable

fuel cell - energy from reaction of fuel + Oxygen –> dont have to be recharged