a)CO2 +Ca(OH)2--->CaCO3 +H2O
Ta có
m\(_{CaCO3}=\frac{5}{100}=0,05\left(mol\right)\)
Theo pthh
n\(_{C_{ }O2}=n_{CaCO3}=0,05\left(mol\right)\)
m\(_{CO2}=0,05.44=2,2\left(g\right)\)
Mà n\(_{hh}=\frac{4,48}{22,4}=0,2\left(mol\right)\)
n\(_{O2}=0,2.0,05=0,15\left(mol\right)\)
m\(_{O2}=0,15.32=4,8\left(g\right)\)
a,\(PTHH:CO2+Ca\left(OH\right)2\rightarrow CaCO3+H2O\)
=> mCaCO3 = 0,05 mol
=>nCo2 = 0,05 mol
mCO2 = 2,2
=>nO2 = 0,15 => mO2 = 4,8
b, \(n_{Fe2O3}=0,1\left(mol\right)\)
\(\Rightarrow n_{HCl}=0,6\left(mol\right)\)
\(\Rightarrow CM_{HCl}=\text{=0,6/0,006=100M}\)
a)CO2 +Ca(OH)2--->CaCO3 +H2O
Ta có
mCaCO3=5100=0,05(mol)
Theo phương trình hoá học
nCO2=nCaCO3=0,05(mol)
mCO2=0,05.44=2,2(g)
Mà nhh=4,4822,4=0,2(mol)
nO2=0,2.0,05=0,15(mol)
m