Intro To Electroanalytical Chem

Question 1

How do potentials arise in chemistry

How is it cause

Answer 1

Due to a buildup of electrons (charge)

Caused by redox rxns

Question 2

What is the anode
What does it mean

Answer 2

Oxidation
Loses electrons

Leo

Question 3

What is the cathode

What happens to it

Answer 3

Reduction

Gain electrons

Ger

Question 4

Who do you convert reduction potential to oxidation potentials

Answer 4

Flip the sign

Question 5

What is the potential of the SHE

what are all standard reduction potentials relative to

Answer 5

0V

RELATIVE TO THE SHE

Question 6

What are galvanic cells

Answer 6

Two half cells that help measure the voltage (potential difference) between two electrodes

Question 7

What is voltage

Answer 7

A measure of the tendency to be reduced or oxidized

Question 8

From a diagram to see which is the anode and cathode:

Answer 8

• side of voltmeter is anode oxidation loss

+ side of voltmeter is cathode reduction gain

Question 9

What is measure and controlled in

Potentiometer
Amperometry
Voltammetry
Direct coulometry
Conductometry
Impedimetry

Answer 9

E i=0
i (current) E
i=f(t) E=f(t)
——
Conductivity
Electrical impedance E= constant+f(t)