Help balancing
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Box
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Help balancing


Cr2(SO4)3+SrI2=CrI2+Sr2(SO4)
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ChenBeier
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No you have to consider Chromium is 3+ and Strontium is 2+.

So your edukts are correct.

But the products formulas are wrong.


So how does Chromiumiodide and strontiumsulfate looks like.
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Abraman
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How would we balance an oxidation equation for lead?
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ChenBeier
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You didnt say in which condition you have the lead. For example as metall it can be oxidiesed.

Pb => Pb 2+ + 2 e-

O2 + 4 e-=> 2 O 2-

In addition and balancing you will have 2 Pb + O2 => 2 PbO

In an car battery you have 2 Pb 2+ => Pb + Pb 4+ for charging
discharging its the opposit. Pb 4+ + Pb => 2 Pb 2+
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Abraman
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Ah, sorry!

What would the balanced oxidation equation for lead with the lead ion having a charge of +2 be? Also what would the balanced reduction equation for gold be with the gold ion having a charge of +3?
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ChenBeier
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You can see it already in my post above Lead change from 2 to 4. Gold I guess will go down to zero.
This should be easy to develop.
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