DAT Destroyer #158

[faye1891]

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Given the following reduction potentials, which of the below choices contain the strongest oxidizing agent?

A) Mg2+ + 2e- ------> Mg -2.4 volts
B) Cd2+ + 2e- ------> Cd. -0.40 volts
C) Ag+. + 1e- -------> Ag. 0.771 volts
D) Fe 3+ + 1e- ------> Fe 2+. -0.70 volts


I undertand that it's going to be the one that will want to be reduced the most. I put D, but e answer is C. Can someone explain why? I dont think i fully understand the concept.

Thanks!👍

 

[ballyhoo]

I think for reduction potentials, positive means it is spontaneous, which means that C is the only answer where the reduction will happen spontaneously. This makes this the strongest oxidizing agent.

At least, that's what I got from watching Chad's videos on it 🙂 lesson 7!

 

[batman09]

You're given the reduction potentials and the question asks for the strongest oxidizing agent. Therefore, the values also reflect the values of oxidizing agents. (Think back to OIL RIG--a reduced species is also the oxidizing agent.)

Therefore, the answer is C because it is the only choice that is the most positively reduced (aka the most positive value as written).

Hope that made sense! 🙂

 

[faye1891]

Does make sense thank you so much. I dont know why i messed this one up, its actually pretty simple.