Предмет: Химия, автор: marader23

помогите решить пожалуйста (четвертная оценка от этого зависит )

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Ответы

Автор ответа: kattycats
1
5. 2Ca + O2 = 2CaO
CaO + CO2 = CaCO3
CaCO3 + 2HNO3 = Ca(NO3)2 + CO2 + H2O

2Na + 2H2O = 2NaOH + H2
2NaOH + H2CO3 = Na2CO3 + 2H2O
Na2CO3 + H2SO4 = Na2SO4 + CO2 + H2O

Al(OH)3 + 3HNO3 = Al(NO3)3 + 3H2O
Al(NO3)3 + 3NaOH = Al(OH)3 + 3NaNO3
2Al(OH)3 = Al2O3 + 3H2O при нагревании

Fe(NO3)3 + 3NaOH = Fe(OH)3 + 3NaNO3
2Fe(OH)3 = Fe3O3 + 3H2O при нагревании

4. 2Al + 6HCl = 2AlCl3 + 3H2
2Al(0) + 6H(+) + 6Cl(-) = 2Al(3+) + 6Cl(-) + 3H2(0)
2Al(0) + 6H(+) = 2Al(3+) + 3H2(0)

2Al(OH)3 + 3H2SO4 = Al2(SO4)3 + 6H2O
2Al(OH)3 + 6H(+) + 3SO4(2-) = 2Al(3+) + 3SO4(2-) + 6H2O
2Al(OH)3 + 6H(+) = 2Al(3+) + 6H2O
Al(OH)3 + 3H(+) = Al(3+) + 3H2O

Al2(SO4)3 + 3BaCl2 = 3BaSO4 + 2AlCl3
2Al(3+) + 3SO4(2-) + 3Ba(2+) + 6Cl(-) = 3BaSO4 + 2Al(3+) + 6Cl(-)
Ba(2+) + SO4(2-) = BaSO4

Fe2O3 + 6HNO3 = 2Fe(NO3)3 + 3H2O
Fe2O3 + 6H(+) + 6NO3(-) = 2Fe(3+) + 6NO3(-) + 3H2O
Fe2O3 + 6H(+) = 2Fe(3+) + 3H2O


3. 2Ca + O2 = 2CaO
Ca + S = CaS
Ca + Cl2 = CaCl2
Ca + H2 = CaH2
Ca + 2H2O = Ca(OH)2 + H2
Ca + H2SO4 = CaSO4 + H2


1. 2Al + 3Cl2 = 2AlCl3
2Al + 3H2SO4 = Al2(SO4)3 + 3H2
2Al + 3S = Al2S3
2Al + 3CuSO4 = Al2(SO4)3 + 3Cu
Al + 3H2O = Al(OH)3 + 3H2 

2. 2Fe + O2 = 2FeO
Fe + S = FeS
Fe + Cl2 = FeCl2
Fe + 2H2O = Fe(OH)2 + H2
Fe + H2SO4 = FeSO4 + H2
Fe + Hg(NO3)2 = Fe(NO3)2 + Hg

marader23: спасибо большое ! (тройка мне обеспечена)
kattycats: не за что, удачи)
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