Exp 23 Q2 In this experiment, you will be using the metal ions: Cu 2+ , Mg 2+ ,

Question

Exp 23 Q2

In this experiment, you will be using the metal ions: Cu2+, Mg2+, and Ag+. Answer the following questions using the appropriate standard reduction potentials from your textbook.

Part A

Enter the standard reduction potential for Cu2+.

0.340

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Correct

Part B

Enter the standard reduction potential for Mg2+.

-2.37

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Correct

Part C

Enter the standard reduction potential for Ag+.

0.800

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Correct

Part D

Based on the values you entered in Parts A to C, which of these metals will you use as the anode in two of the three possible full cell configurations that result in spontaneous reactions?

Based on the values you entered in Parts A to C, which of these metals will you use as the anode in two of the three possible full cell configurations that result in spontaneous reactions?

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Chemistry 106 Summer 2016

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Experiment #23 Pre-lab

Exp 23 Q2

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0.340

Explanation / Answer

Fuel cell generates electricity so it is like a galvanic cell and rules applicable there are applicable to fuel cell.

In galvanic cell the anode is where electrons are generated as you oxidise a species and generate electrons

So the species which can be easily oxidised will be the anode

More negative the standard reduction potential the more reducing that agent is so cannot be easily oxidised so in this case the anode is the one with more positive reduction potential. SO SIlver will be the anode

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