REDOX I AND REDOX II

Question 1

How do you set up an electrochemical cell?

Answer 1

1) Obtain the metals and clean them.

2) Wash the netals’ surface with propanine to remove the grease.

3) Place each metal into a solution containing the ion of the same metal.

4) Make a salt bridge from filter paper soaked in saturated KNO3. This should be linking the 2 beakers and the salt bridge should be submerged in each beaker.

5) Connect the electrodes with wires, crocodile clips, and a voltmeter. A reading will appear if it’s set up correctly.

Question 2

What is a half cell?

Answer 2

One half of an electrochemical cell

Question 3

Is it true that in an electrochemical cell electrons will always flow from a more reactive metal to a less reactive metal?

Answer 3

Yes

Question 4

Is it true that all electrode potentials are written on the reduced form, with electrons on the left hand side ?

Answer 4

Yes

Question 5

What is used as a reference to measure the standard electrode potentials?

Answer 5

The Standard Hydrogen Electrode

Question 6

What is the voltage of S.H.E?

Answer 6

0V

Question 7

What are standard conditions?

Answer 7

• 298K
• 100kPa pressure
• Conc of ions at 1 mol dm^-3