oxidation numbers

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Jasmine W 1K
Posts: 49
Joined: Sat Sep 07, 2019 12:18 am

oxidation numbers

Postby Jasmine W 1K » Thu Feb 20, 2020 12:27 pm

Is the oxidation number just the charge? If not, how do you find the oxidation number?

Kassidy Ford 1I
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Joined: Sat Aug 17, 2019 12:16 am
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Re: oxidation numbers

Postby Kassidy Ford 1I » Thu Feb 20, 2020 1:10 pm

There are several molecules with known oxidation numbers, for example O is known to have an oxidation number of -2. Using the known oxidation numbers you can solve for oxidation numbers of other molecules, for example if you have the molecule MnO4 with an overall charge of -1, then you know that Mn would have an oxidation number of +7 so that the overall molecule has a charge of -1.

Maya Beal Dis 1D
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Joined: Sat Aug 17, 2019 12:16 am
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Re: oxidation numbers

Postby Maya Beal Dis 1D » Thu Feb 20, 2020 4:00 pm

The charge of a molecule is always equal to the sum of the oxidation numbers multiplied by the amount of each element, so you can use the net charge to determine oxidation numbers.

Amir Bayat
Posts: 115
Joined: Sat Sep 07, 2019 12:16 am

Re: oxidation numbers

Postby Amir Bayat » Thu Feb 20, 2020 4:33 pm

The net charge is the oxidation number of the element multiplied by the amount of that element available. Therefore the oxidation number is not necessarily the charge, but it can be utilized to find the charge.

Michelle Xie 2B
Posts: 99
Joined: Sat Aug 17, 2019 12:18 am

Re: oxidation numbers

Postby Michelle Xie 2B » Thu Feb 20, 2020 10:34 pm

You use the known oxidation numbers for some elements and fill in the rest. The sum of all the oxidation numbers should add up to the total charge of the molecule.

Edmund Zhi 2B
Posts: 118
Joined: Sat Jul 20, 2019 12:16 am

Re: oxidation numbers

Postby Edmund Zhi 2B » Fri Feb 21, 2020 1:33 am

Use common oxidations states such as that of very electronegative atoms like oxygen, nitrogen, and fluorine, and then fill in the rest to make sure that the charges add up to the overall charge of the molecule

Sean Cheah 1E
Posts: 105
Joined: Wed Sep 18, 2019 12:20 am

Re: oxidation numbers

Postby Sean Cheah 1E » Fri Feb 21, 2020 9:06 am

Here is a website with some common rules that one should follow when assigning oxidation numbers: https://www.thoughtco.com/rules-for-assigning-oxidation-numbers-607567.

Jasmine Vallarta 2L
Posts: 102
Joined: Sat Aug 17, 2019 12:18 am

Re: oxidation numbers

Postby Jasmine Vallarta 2L » Fri Feb 21, 2020 12:10 pm

you can usually use commonly known oxidation numbers to solve for the remaining unknown oxidation numbers.

Anna Heckler 2C
Posts: 102
Joined: Wed Sep 18, 2019 12:18 am

Re: oxidation numbers

Postby Anna Heckler 2C » Fri Feb 21, 2020 12:45 pm

The oxidation number of simple ions is equal to the charge of the ion. When calculating oxidation numbers, we can use known oxidation numbers to find the unknowns.


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