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landi66
@landi66
October 2021
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Помогите, пожалуйста, очень надо :(
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Hanami
1)
2Cr+O2=2CrO
2)---------------------
3)
Cr2(SO4)3+6KOH=2Cr(OH)3+3K2SO4
4)
Cr(OH)3 + 3HNO3(разб. ) = Cr(NO3)3 + 3H2O
5)
Cr(OH)3 + 3 NaOH = Na3CrO3 + 3 H2O
==========================================
1)2Ca+O2=2CaO
2)CaO+H2O=Ca(OH)2
3)
Ca(OH)2=CaO+H2O
4)CaO+CO2=
CaCO3
5)
CaCO3+CO2+H2O=Ca(HCO3)2
6)
Ca(hco3)2=Caco3+co2+h2o
7)
Caco3=Cao+Co2
2 votes
Thanks 1
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Answers & Comments
2)---------------------
3)Cr2(SO4)3+6KOH=2Cr(OH)3+3K2SO4
4)Cr(OH)3 + 3HNO3(разб. ) = Cr(NO3)3 + 3H2O
5) Cr(OH)3 + 3 NaOH = Na3CrO3 + 3 H2O
==========================================
1)2Ca+O2=2CaO
2)CaO+H2O=Ca(OH)2
3)Ca(OH)2=CaO+H2O
4)CaO+CO2=CaCO3
5)CaCO3+CO2+H2O=Ca(HCO3)2
6)Ca(hco3)2=Caco3+co2+h2o
7)Caco3=Cao+Co2