6M7

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MaryBanh_2K
Posts: 101
Joined: Wed Sep 18, 2019 12:21 am

6M7

Postby MaryBanh_2K » Wed Feb 26, 2020 2:27 am

I know a more negative (less positive) standard reduction potential leads to a stronger metal as a reducing agent. For this problem, how do we know which standard reduction potential to use in the appendix when there are many of them for the same element?

ALegala_2I
Posts: 102
Joined: Thu Jul 11, 2019 12:17 am

Re: 6M7

Postby ALegala_2I » Wed Feb 26, 2020 10:06 am

Use the value that corresponds with reduction potential for the substance in a solid state.

Daniela Shatzki 2E
Posts: 53
Joined: Sat Aug 24, 2019 12:16 am

Re: 6M7

Postby Daniela Shatzki 2E » Sun Mar 01, 2020 9:22 pm

I'm also confused about this, there are many listed for elements such as copper and I'm not sure which to use.

Sue Bin Park 2I
Posts: 52
Joined: Mon Jun 17, 2019 7:24 am

Re: 6M7

Postby Sue Bin Park 2I » Sun Mar 01, 2020 11:35 pm

i believe using the first table in appendix 2B (Potentials in Electrochemical Order) is most helpful for these questions.

e.g. for 6M.7a), in order to find if Fe or Cu have greater reducing capacity, we check for the highest instance of Fe and the highest instance of Cu (in the direction of the reducing pole, that is the end/bottom right of the list. Cu doesn't appear until the second column; the first instance of Fe toward the reducing pole is much closer to the strongest reducing agent.


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