# Chem / RedOx question

**URL:** <https://forums.speedlife.net/t/chem-redox-question/59128>\
**Category:** NYSpeed Off Topic\
**Created:** [December 3, 2008, 4:56am UTC](https://forums.speedlife.net/t/chem-redox-question/59128 "2008-12-03T04:56:49Z")\
**Posts on this page:** 15\
**Page:** 1

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**Author:** ![Toda\_Party](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/toda_party/32/7354_2.png) [@Toda\_Party](https://forums.speedlife.net/u/Toda_Party)\
**Post date:** [December 3, 2008, 4:56am UTC](https://forums.speedlife.net/t/chem-redox-question/59128/1 "2008-12-03T04:56:49Z")

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long shot but ive been up all night doing hmwk, this is the last problem and im like :bloated: right now, not sure where im fuckin up here…:gotme:

Balance the RedOx Rxn: As2O3 + NO3- —\> H3AsO4 + N2O3

1/2 reactions:

4e- + AS2O3 + 5H20 —\> 2H3AsO4 + 4H+

and

2NO3- + 3H+ —\> N2O3 + 3H2O + 1e-

So here’s my question: Can I multiply the 2nd 1/2 rxn by 4 and the top by 1? Cuz when I do that and cancel out, the Hydrogens don’t balance out…

(4e- + AS2O3 + 5H20 —\> 2H3AsO4 + 4H+) x 1  
(2NO3- + 3H+ —\> N2O3 + 3H2O + 1e-) x 4

4e- + AS2O3 + 5H20 —\> 2H3AsO4 + 4H+  
8NO3- + 12H+ ----\> 4N2O3 + 12H20 + 4e-

cancel out

8NO3- + AS2O3 + 8H+ ----\> 4N2O3 + 2H3AsO4 + 7H20

8 H on the left, 20 on the right?? :wtf:

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**Author:** ![Willybeen](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/willybeen/32/7351_2.png) [@Willybeen](https://forums.speedlife.net/u/Willybeen)\
**Post date:** [December 3, 2008, 4:59am UTC](https://forums.speedlife.net/t/chem-redox-question/59128/2 "2008-12-03T04:59:40Z")

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I hated that class. And it was too long ago for me to remember, 943kgt might have better understanding, he paid more attention than me throughout the chemistry classes.

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**Author:** ![Toda\_Party](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/toda_party/32/7354_2.png) [@Toda\_Party](https://forums.speedlife.net/u/Toda_Party)\
**Post date:** [December 3, 2008, 5:14am UTC](https://forums.speedlife.net/t/chem-redox-question/59128/3 "2008-12-03T05:14:10Z")

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yeah i hate it too. stupid numbers.

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**Author:** ![longuyen88](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/longuyen88/32/7611_2.png) [@longuyen88](https://forums.speedlife.net/u/longuyen88)\
**Post date:** [December 3, 2008, 5:37am UTC](https://forums.speedlife.net/t/chem-redox-question/59128/4 "2008-12-03T05:37:08Z")

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gen chem?

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**Author:** ![Toda\_Party](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/toda_party/32/7354_2.png) [@Toda\_Party](https://forums.speedlife.net/u/Toda_Party)\
**Post date:** [December 3, 2008, 6:28am UTC](https://forums.speedlife.net/t/chem-redox-question/59128/5 "2008-12-03T06:28:41Z")

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meh I got it. friggin coeff in front of H2 got me.

I corrected it in case anyone cares. And yeah, gen/inorganic part 2

> [@Toda Party"](#):
>
> Balance the RedOx Rxn: As2O3 + NO3- —\> H3AsO4 + N2O3
> 
> 1/2 reactions:
> 
> 4e- + AS2O3 + 5H20 —\> 2H3AsO4 + 4H+
> 
> and
> 
> 2NO3- + **6** H+ —\> N2O3 + 3H2O + 1e-
> 
> (AS2O3 + 5H20 —\> 2H3AsO4 + 4H+ + 4e-) x 1  
> (4e- + 2NO3- + 3H+ —\> N2O3 + 3H2O) x 1
> 
> AS2O3 + 5H20 —\> 2H3AsO4 + 4H+ + 4e-  
> 4e- + 2NO3- + 6H+ —\> N2O3 + 3H2O
> 
> cancel out
> 
> 2H+ + 2NO3- + AS2O3 + 2H20 ----\> N2O3 + 2H3AsO4

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**Author:** ![RedGoober4Life](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/redgoober4life/32/7610_2.png) [@RedGoober4Life](https://forums.speedlife.net/u/RedGoober4Life)\
**Post date:** [December 3, 2008, 8:13am UTC](https://forums.speedlife.net/t/chem-redox-question/59128/6 "2008-12-03T08:13:57Z")

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I liked general chem!

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**Author:** ![longuyen88](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/longuyen88/32/7611_2.png) [@longuyen88](https://forums.speedlife.net/u/longuyen88)\
**Post date:** [December 3, 2008, 4:57pm UTC](https://forums.speedlife.net/t/chem-redox-question/59128/7 "2008-12-03T16:57:37Z")

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for some reason gen. chem was really hard for me at UB lol maybe its because i didn’t take chem in highschool

orgo on the other hand was a cake walk

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**Author:** ![Treads4Heads](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/treads4heads/32/7416_2.png) [@Treads4Heads](https://forums.speedlife.net/u/Treads4Heads)\
**Post date:** [December 3, 2008, 4:59pm UTC](https://forums.speedlife.net/t/chem-redox-question/59128/8 "2008-12-03T16:59:46Z")

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FUCK gen, and FUCK orgo, and FUCK analytical

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**Author:** ![RedGoober4Life](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/redgoober4life/32/7610_2.png) [@RedGoober4Life](https://forums.speedlife.net/u/RedGoober4Life)\
**Post date:** [December 3, 2008, 6:52pm UTC](https://forums.speedlife.net/t/chem-redox-question/59128/9 "2008-12-03T18:52:14Z")

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Analytical with Colòn? That class wasn’t bad. Breaking up the lecture and lab so much seems really illogical, probably because it is. That class structure is the reason I switched from Chemistry to Chemical Engineering.

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**Author:** ![Toda\_Party](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/toda_party/32/7354_2.png) [@Toda\_Party](https://forums.speedlife.net/u/Toda_Party)\
**Post date:** [December 3, 2008, 10:42pm UTC](https://forums.speedlife.net/t/chem-redox-question/59128/10 "2008-12-03T22:42:00Z")

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my whole class did terrible on kinetics and acid/base equilibira … i got a 77 on the midterm and that was the 3rd highest grade :bloated: then again its a community college, the teacher isn’t all that great, and the kids aren’t all that bright

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**Author:** ![longuyen88](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/longuyen88/32/7611_2.png) [@longuyen88](https://forums.speedlife.net/u/longuyen88)\
**Post date:** [December 4, 2008, 7:03am UTC](https://forums.speedlife.net/t/chem-redox-question/59128/11 "2008-12-04T07:03:18Z")

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> [@RedGoober4Life](#):
>
> Analytical with Colòn? That class wasn’t bad. Breaking up the lecture and lab so much seems really illogical, probably because it is. That class structure is the reason I switched from Chemistry to Chemical Engineering.

I am taking analytical w/ Aga right now. She’s a good teacher I like her. Currently A in the class. We’ll see after finals lol

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**Author:** ![Joe](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/joe/32/7219_2.png) [@Joe](https://forums.speedlife.net/u/Joe)\
**Post date:** [December 4, 2008, 7:11am UTC](https://forums.speedlife.net/t/chem-redox-question/59128/12 "2008-12-04T07:11:32Z")

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An azn having trouble with math and science? That’s like the proverbial black dude with a small package. That sucks.

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<div class="post-metadata">

**Author:** ![RedGoober4Life](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/redgoober4life/32/7610_2.png) [@RedGoober4Life](https://forums.speedlife.net/u/RedGoober4Life)\
**Post date:** [December 4, 2008, 9:03am UTC](https://forums.speedlife.net/t/chem-redox-question/59128/13 "2008-12-04T09:03:52Z")

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> [@longuyen88](#):
>
> I am taking analytical w/ Aga right now. She’s a good teacher I like her. Currently A in the class. We’ll see after finals lol

Have fun with King/Coppens for Physical Chemistry. So glad I’m done with that department.

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**Author:** ![ILC](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ilc/32/5337_2.png) [@ILC](https://forums.speedlife.net/u/ILC)\
**Post date:** [December 4, 2008, 9:09am UTC](https://forums.speedlife.net/t/chem-redox-question/59128/14 "2008-12-04T09:09:44Z")

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you just have to follow the steps for this…

[http://preparatorychemistryonline.com/Bishop\_Balancing\_Redox.htm](http://preparatorychemistryonline.com/Bishop_Balancing_Redox.htm)

Try reading through this

OR

try reading

> **[RedOx Electron Balancing question](https://forums.studentdoctor.net/threads/redox-electron-balancing-question.583322/#post-7435843)**
>
> Hey all, sorry for the hmwk question but I just had a quick Q...its late so maybe I'm missing something....
> 
> Balance the RedOx Rxn: As2O3 + NO3- ---\>...

😉

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<div class="post-metadata">

**Author:** ![Toda\_Party](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/toda_party/32/7354_2.png) [@Toda\_Party](https://forums.speedlife.net/u/Toda_Party)\
**Post date:** [December 4, 2008, 1:33pm UTC](https://forums.speedlife.net/t/chem-redox-question/59128/15 "2008-12-04T13:33:07Z")

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way to read the thread, i figured it out 45 min later after i got to school and re-did it…stalker
