Oxidation/Reduction Method

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JaeHoCho1B
Posts: 16
Joined: Sat Jul 09, 2016 3:00 am

Oxidation/Reduction Method

Postby JaeHoCho1B » Sat Feb 04, 2017 9:02 pm

Hello! I had two questions for the oxidation/reduction method:
1. When we take account the oxidation/reduction method, how do we know when to use both the acidic and basic method?
2. Do we have to know all the charges for every element besides the elements in Group 1A, Group 2A, and Group 8A since they have a specific charges? In addition, do we have to know every charge for the transition metals? If not, is there any easier to remember the charges for the elements within a compound?
Thank you so much for your time! Have a great day!
Last edited by JaeHoCho1B on Sun Feb 05, 2017 12:07 am, edited 1 time in total.

Yuchien Ma 2L
Posts: 46
Joined: Wed Sep 21, 2016 2:58 pm

Re: Oxidation/Reduction Method

Postby Yuchien Ma 2L » Sat Feb 04, 2017 9:20 pm

I'm not sure what your first question means, but I'll go ahead and answer your second question.
For electrochemistry, it is agreed that the oxidation state of O is -2, and H is usually +1 (although in some cases it can be -1), and we only know the charge of an element IF it is an ion, otherwise we wouldn't really know.
In order to calculate the charge of those unknown ions in a compound, you must use the overall oxidation state and the known oxidation states to figure out the oxidation state of that unknown ion.
Hope this helps!


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