Test #2

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deniise_garciia
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Test #2

Postby deniise_garciia » Fri Mar 01, 2019 11:53 am

How do you know to label each element in increasing power? It was a test #2 question.

Semi Yoon
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Re: Test #2

Postby Semi Yoon » Fri Mar 01, 2019 12:48 pm

If you see the standard reduction potential chart, the one with the higher (more positive) cell potential will be a stronger oxidizing agent while the one with the more negative cell potential will be a stronger reducing agent.

Matthew Mar 1J
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Re: Test #2

Postby Matthew Mar 1J » Sat Mar 02, 2019 7:43 pm

You should be careful when reading the question though, because sometimes the requested redox reaction will be the reverse of what is listed in the table so you have to flip the sign before ordering them.

Kevin Tang 4L
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Re: Test #2

Postby Kevin Tang 4L » Sat Mar 02, 2019 8:56 pm

If you want more practice for this type of question 14.25 in the 6th edition of the book is a good resource. It gets confusing for me because you have to reverse the E value and understand if the question is asking for the strength as a reducing or oxidizing agent and whether it is asking the strength of (using Cu as example) Cu or Cu 2+

George Ghaly 2L
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Re: Test #2

Postby George Ghaly 2L » Sun Mar 03, 2019 7:27 pm

The higher the reduction potential the easier it is for a species to be reduced and the lower the reduction potential the easier it is foe a species to be oxidized.

Jchellis 1I
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Re: Test #2

Postby Jchellis 1I » Sun Mar 03, 2019 10:07 pm

Was this covered in class? Or were we just expected to know it?

Kevin Tang 4L
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Re: Test #2

Postby Kevin Tang 4L » Sun Mar 03, 2019 11:58 pm

Jchellis 1I wrote:Was this covered in class? Or were we just expected to know it?


Don't recall if this particular type of problem was explicitly covered in class, but we should know this based on the information that Lavelle has given us. It is also in our homework which suggests we are expected to know it.

Mona El Masri 1F
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Re: Test #2

Postby Mona El Masri 1F » Mon Mar 04, 2019 10:31 am

Higher E value= more reducing power
Lower E value= more oxidizing power

Sapna Ramappa 1J
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Re: Test #2

Postby Sapna Ramappa 1J » Sat Mar 09, 2019 8:44 am

If you're looking for increasing oxidizing power, you need to see which elements have a higher chance of being reduced. In other words, you'd see which values have the highest standard reduction potential and are the most positive. If you're looking for increasing reducing power, you need to see which elements have the most negative standard reduction potentials.

allisoncarr1i
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Re: Test #2

Postby allisoncarr1i » Sun Mar 10, 2019 8:58 pm

Jchellis 1I wrote:Was this covered in class? Or were we just expected to know it?

It was mentioned in the homework problems for this section.

Nicolle Fernandez 1E
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Re: Test #2

Postby Nicolle Fernandez 1E » Mon Mar 11, 2019 3:50 pm

How do we find out which two to pair in order to get the greatest Gibbs difference it was the last part of this question.


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