Where to find Ecell values


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claudia_1h
Posts: 111
Joined: Fri Aug 09, 2019 12:16 am

Where to find Ecell values

Postby claudia_1h » Tue Feb 25, 2020 6:48 pm

Can someone point me to where to find a table of reduction potentials for common half reactions? Either in the book or on Lavelle's website...can't seem to find it

Betania Hernandez 2E
Posts: 107
Joined: Fri Aug 02, 2019 12:15 am

Re: Where to find Ecell values

Postby Betania Hernandez 2E » Tue Feb 25, 2020 8:08 pm

The Ecell values can be found in the back of the textbook in Appendix 2B.

Kevin Antony 2B
Posts: 99
Joined: Sat Sep 07, 2019 12:16 am

Re: Where to find Ecell values

Postby Kevin Antony 2B » Tue Feb 25, 2020 8:08 pm

Its in the book at Appendix 2B. (After Chapter 11 but before the answer key)

Jainam Shah 4I
Posts: 130
Joined: Fri Aug 30, 2019 12:16 am

Re: Where to find Ecell values

Postby Jainam Shah 4I » Tue Feb 25, 2020 8:16 pm

Appendix 2B has them and remember they are all given as reduction potentials. Keep that in mind while calculating the standard potentials

Viviana Velasquez
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Joined: Sat Jul 20, 2019 12:15 am

Re: Where to find Ecell values

Postby Viviana Velasquez » Thu Feb 27, 2020 6:46 pm

Appendix 2B or you can look it up online

AKatukota
Posts: 100
Joined: Thu Jul 25, 2019 12:18 am

Re: Where to find Ecell values

Postby AKatukota » Thu Feb 27, 2020 7:57 pm

Does anyone know when you would flip the sign in a half relation? I know that if you flip the equation the sign flips, but then do you not do this when calculating E(cell)? like if they give you the E value in the problem and the equation has to be flipped do you flip the sign?

Leila_4G
Posts: 114
Joined: Sat Sep 14, 2019 12:17 am

Re: Where to find Ecell values

Postby Leila_4G » Thu Feb 27, 2020 8:15 pm

My TA talks about the "e-chem series" and how if the value is higher then it has more oxidizing/reducing power, but what is the e-chem series?

Juana Abana 1G
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Joined: Wed Sep 18, 2019 12:15 am

Re: Where to find Ecell values

Postby Juana Abana 1G » Thu Feb 27, 2020 9:42 pm

They are located in Appendix 2B in the textbook.

gabbymaraziti
Posts: 111
Joined: Wed Sep 18, 2019 12:19 am

Re: Where to find Ecell values

Postby gabbymaraziti » Thu Feb 27, 2020 9:48 pm

AKatukota wrote:Does anyone know when you would flip the sign in a half relation? I know that if you flip the equation the sign flips, but then do you not do this when calculating E(cell)? like if they give you the E value in the problem and the equation has to be flipped do you flip the sign?


The Ecell values given in Appendix 2B are for the reduction half reaction. You would flip the sign of the Ecell value and the equation if you were looking for the oxidation half reaction, and vice versa.

Matt F
Posts: 100
Joined: Sat Aug 17, 2019 12:17 am

Re: Where to find Ecell values

Postby Matt F » Fri Feb 28, 2020 10:15 am

gabbymaraziti wrote:
AKatukota wrote:Does anyone know when you would flip the sign in a half relation? I know that if you flip the equation the sign flips, but then do you not do this when calculating E(cell)? like if they give you the E value in the problem and the equation has to be flipped do you flip the sign?


The Ecell values given in Appendix 2B are for the reduction half reaction. You would flip the sign of the Ecell value and the equation if you were looking for the oxidation half reaction, and vice versa.


In addition to this, what helps me is I just subtract the oxidation half reaction from the reduction half reaction, basically just flipping the sign anyways. Just be careful not to change the sign twice as he mentioned in class

vanessas0123
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Joined: Wed Sep 11, 2019 12:17 am

Re: Where to find Ecell values

Postby vanessas0123 » Sun Mar 01, 2020 12:41 am

Appendix 2B or just google it!

Jasmine W 1K
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Joined: Sat Sep 07, 2019 12:18 am

Re: Where to find Ecell values

Postby Jasmine W 1K » Sun Mar 01, 2020 4:59 pm

It can be found in Appendix 2B at the back of the book!

Elizabeth Harty 1A
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Joined: Sat Jul 20, 2019 12:16 am

Re: Where to find Ecell values

Postby Elizabeth Harty 1A » Sun Mar 01, 2020 5:00 pm

Appendix 2B in textbook

Nuoya Jiang
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Joined: Sat Sep 14, 2019 12:17 am

Re: Where to find Ecell values

Postby Nuoya Jiang » Sun Mar 01, 2020 5:02 pm

Appendix 2B. I googled one table for Ecell values but calculations based on those were not the same as the solution manual.

Anushka Chauhan2B
Posts: 51
Joined: Sat Aug 24, 2019 12:16 am

Re: Where to find Ecell values

Postby Anushka Chauhan2B » Sun Mar 01, 2020 5:13 pm

Appendix 2B

san_2F
Posts: 118
Joined: Sat Jul 20, 2019 12:15 am

Re: Where to find Ecell values

Postby san_2F » Sun Mar 01, 2020 5:15 pm

Appendix 2B but make sure that to manipulate the values when the reaction is flipped.


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