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Box
Newbie

Joined: 29 Jan 2018
Posts: 1
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Help balancing
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Cr2(SO4)3+SrI2=CrI2+Sr2(SO4) |
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ChenBeier
Distinguished Member
 
Joined: 27 Sep 2017
Posts: 259
Location: Berlin, Germany
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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
Newbie

Joined: 08 Feb 2018
Posts: 2
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How would we balance an oxidation equation for lead? |
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ChenBeier
Distinguished Member
 
Joined: 27 Sep 2017
Posts: 259
Location: Berlin, Germany
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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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Joined: 08 Feb 2018
Posts: 2
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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
Distinguished Member
 
Joined: 27 Sep 2017
Posts: 259
Location: Berlin, Germany
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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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