EC 2

Question 1

Voltage-time graph

Answer 1

square staircase

Question 2

What is sparging in electrochemical experiments and why is it important?

Answer 2

The purpose of sparging is to remove the dissolved oxygen. This is because the peaks from oxygen reduction may interfer with the analysis

Question 3

On a Voltammogram that has two unknown metal peaks, what can you do qualititavtiy determine metals present

Answer 3

We can spike the sample with small amounts of a none concentration of a known metal.

Question 4

Name toways of measuring the concnetation of a unknown sample

Answer 4

1) can measure the peak hieght to measure the concentrations.

2) We can use the half-wave potentials to determine qualitiatve infomatin about the present metals.