# Problem: Which metal(s) can be oxidized with a Pb2+ solution but not with a Cd2+ solution? (Hint: The reactions are occurring under standard conditions.)A. CrB. NiC. ZnD. Sn

###### FREE Expert Solution

Pb2+ + 2 e  Zn                  E° = ‒0.1262 V

Cd2+ + 2 e  Cd                  E° = ‒0.4030 V

• ↓ E° → oxidation

Loss Electrons → Oxidation → Reducing Agent

• ↑ E° → reduction → cathode

Gain Electrons → Reduction → Oxidizing Agent

can be oxidized with a Pb2+ solution but not with a Cd2+ solution

Cr2+ + 2 e  Cr                 E° = ‒0.913 V

• lower E° than Pb2+/Pb and Cd2+/Cd

• Cr → can be oxidized by both Pb2+ and Cd2+

Ni2+ + 2 e  Ni                  E° = ‒0.257 V

• higher E° than Cd2+/Cd but lower than Pb2+/Pb

• Ni → can be oxidized by Pb2+ but not by Cd2+

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###### Problem Details

Which metal(s) can be oxidized with a Pb2+ solution but not with a Cd2+ solution? (Hint: The reactions are occurring under standard conditions.)

A. Cr

B. Ni

C. Zn

D. Sn

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Redox Reaction concept. You can view video lessons to learn Redox Reaction. Or if you need more Redox Reaction practice, you can also practice Redox Reaction practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Welch's class at UVA.