Last modified: Tue 04/05/2016 05:52:56 pm
BCE

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Answer all of the questions below. If you do not know an answer enter CNA. However, it will help me the most if you answer each question with your best intuition/idea about what would be a reasonable answer.

First Name:

Last Name:

Laboratory Section:

Look at the QuickTime movie below. Play it, and answer the questions that follow based on the movie.

1. Identify the composition of the metal electrode in the beaker on the right and the composition of the metal electrode in the beaker on the left.

is the metal in the right-hand beaker

is the metal in the left-hand beaker

2. Identify the ion(s) in the beaker on the right and the ion(s) in the beaker on the left.

are the ion(s) in the right-hand beaker

are the ion(s) in the left-hand beaker



3a. Write the half-reaction that occurs in the beaker with copper metal.

b. Is this an oxidation half-reaction or a reduction half-reaction?

4a. Write the half-reaction that occurs in the beaker with zinc metal.

b. Is this an oxidation half-reaction or a reduction half-reaction?

5a. The U-tube connecting the two compartments is called a salt bridge, describe the importance of the salt bridge.

b. Explain why the ions move the direction they move.

6. The color changes in the beaker containing the copper metal, explain why the color changes?

7. Describe the movement of the electrons in the electrochemical cell. Where do the electrons originate? Where is their 'final destination'? How do they get from their origin to their destination?

8. Is there anything about the questions that you feel you do not understand? List your concerns/questions.

9. If there is one question you would like to have answered in lecture, what would that question be?