Chemistry redox Watch

Lucky10
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#21
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#21
(Original post by CheeseIsVeg)
Yep so, sorry was eating food!
So we have an ion here.
So whatever happens, we need the sum of the oxidation states to have a charge of -2

We've spoken about Oxygen always being -2
So here we have 4 oxygens, each with -2
-2 times 4 = -8

Now hold on

We need an overall charge of -2
The only other species we have here is Mn
so its oxidation number must be ?
+2??
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CheeseIsVeg
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#22
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#22
(Original post by Lucky10)
+2??
Not quite.
Do you do maths? would it benefit you if I set it out algebraically?
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Lucky10
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#23
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#23
(Original post by CheeseIsVeg)
Not quite.
Do you do maths? would it benefit you if I set it out algebraically?
Yeha it would
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CheeseIsVeg
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#24
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#24
(Original post by Lucky10)
Yeha it would
AWESOME

So the overall charge is -2 right?
And we've 4 oxygens at -2
so -2 times 4 = -8

Let the oxidation state of Mn be x

-8 + x = -2

Now can you work out what the oxidation state of Mn is (x) ?
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