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VikaMyronova
@VikaMyronova
August 2022
1
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Здійснити перетворення/Осуществить превращения
а)Fe -> FeS -> FeO -> Fe(NO3)2 -> Fe(OH)2 -> FeO
б)Cu -> CuO -> CuCO3 -> Cu(OH)2 -> CuO -> Cu
ТЕРМІНОВО , якщо не повністю знаєте розв'язок, то хоча б припущення
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olhim
Verified answer
А) Fe + S = FeS
2
FeS
+ 3O2 = 2
FeO
+ 2SO
2
FeO + 2HNO3 =
Fe(NO
3)2 +
H
2
O
Fe(NO3)2 + 2
NaOH
=
Fe(OH)
2 + 2NaNO
3
Fe(OH)2 =
FeO
+
H
2O
б) 2Cu + O2 = 2CuO
CuO + CO2 = CuCO3
CuCO3 + 2
NaOH
=
Cu(OH)
2 +
Na
2CO
3
Cu(OH)2 = CuO + H2O
CuO +
H
2 =
Cu
+
H
2
O
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Answers & Comments
Verified answer
А) Fe + S = FeS2FeS + 3O2 = 2FeO + 2SO2
FeO + 2HNO3 = Fe(NO3)2 + H2O
Fe(NO3)2 + 2NaOH = Fe(OH)2 + 2NaNO3
Fe(OH)2 = FeO + H2O
б) 2Cu + O2 = 2CuO
CuO + CO2 = CuCO3
CuCO3 + 2NaOH = Cu(OH)2 + Na2CO3
Cu(OH)2 = CuO + H2O
CuO + H2 = Cu + H2O