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Zisu
@Zisu
October 2021
1
12
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Завдання 10 та 11, допоможіть будь-ласка)
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Анетка125
№1
Ca+2H2O=Ca(OH)2+H2↑
Ca(OH)2+CO2=CaCO3↓+H2O
CaCO3+H2O+CO2=Ca(HCO3)2
Ca(HCO3)2+2HCl=CaCl2+2H2O+2CO2↑
CaCl2+Na2SO4=2NaCl+CaSO4↓
№2
Fe2O3+2Al=Al2O3+2Fe
n(Fe2O3)=48/160=0.3моль
n(Fe2O3):n(Al)
1:2
n(Al)=0.6моль
m(Al)=27*0.6=16.2гр
m(Al)=
18
гр
5 votes
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Answers & Comments
Ca+2H2O=Ca(OH)2+H2↑
Ca(OH)2+CO2=CaCO3↓+H2O
CaCO3+H2O+CO2=Ca(HCO3)2
Ca(HCO3)2+2HCl=CaCl2+2H2O+2CO2↑
CaCl2+Na2SO4=2NaCl+CaSO4↓
№2
Fe2O3+2Al=Al2O3+2Fe
n(Fe2O3)=48/160=0.3моль
n(Fe2O3):n(Al)
1:2
n(Al)=0.6моль
m(Al)=27*0.6=16.2гр
m(Al)=18гр