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Making Galvanic Cells Lab. 3) The salt bridge allows the cell to continue to function. K + or NO 3 – can move into one of the half cells to balance the charge created by + metal ions forming or leaving solution. 4) No. We did not get the same values in the lab. Electron flow. Cu – Zn cell.

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making galvanic cells lab
Making Galvanic Cells Lab

3) The salt bridge allows the cell to continue to function. K+ or NO3– can move into one of the half cells to balance the charge created by + metal ions forming or leaving solution.

4) No. We did not get the same values in the lab

cu zn cell

Electron flow

Cu – Zn cell

Zn  Zn2+ + 2e– (oxidation - LEO)

Cu2+ + 2e–  Cu (reduction - GER)

Cu2++ZnCu+Zn2+

Cu (+)

Salt bridge

Zn (–)

Cu2+

Zn2+

al zn cell

Electron flow

Al – Zn cell

Zn2+ + 2e–  Zn (reduction - GER)

Al  Al3+ + 3e– (oxidation - LEO)

2Al+3Zn2+  2Al3++3Zn

Al (–)

Salt bridge

Zn (+)

Al3+

Zn2+

making galvanic cells lab4
Making Galvanic Cells Lab

Cu-Zn

voltage

Al-Zn

voltage

No bridge

0

No bridge

0

0 sec

3) The salt bridge allows the cell to continue to function. K+ or NO3– can move into one of the half cells to balance the charge created by + metal ions forming or leaving solution.

4) No. We did not get the same values in the lab

 0.9

0 sec

 0.5

30 sec

 0.9

30 sec

 0.5

Deposit

Cu

Deposit

Al

Points to

Cu

Points to

Al

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