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JUDO86
@JUDO86
July 2022
1
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составить цепочку превращений
1)cu-cuo-cuso4-feso4-fe(oh)2- fe3(po4)2
2)o2--p2o3-h3po4
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Answers & Comments
Nadyamoiseeva20
1) 2Cu +O2 = 2CuO
CuO + H2SO4 = CuSO4 + H2O
CuSO4 + Fe = Cu + FeSO4
FeSO4 + 2NaOH = Fe(OH)2 + Na2SO4
3Fe(OH)2 + 2H3PO4 = Fe3(PO4)2 + 6H2O
2) 5O2 + 4P = 2P2O5
P2O5 + 3H2O = 2H3PO4
2 votes
Thanks 2
JUDO86
спасибо))
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Answers & Comments
CuO + H2SO4 = CuSO4 + H2O
CuSO4 + Fe = Cu + FeSO4
FeSO4 + 2NaOH = Fe(OH)2 + Na2SO4
3Fe(OH)2 + 2H3PO4 = Fe3(PO4)2 + 6H2O
2) 5O2 + 4P = 2P2O5
P2O5 + 3H2O = 2H3PO4