CO2+Ca(OH)2->CaCO3+H2O
0,1----0,1--------------0,1
n CO2=0,1 mol
n Ca(OH)2=0,4 mol
=>Ca(OH)2 dư
=>mCa(OH)2du=0,3.74=22,2g
\(n_{CO_2}=\dfrac{2,24}{22,4}=0,1\left(mol\right)\)
\(n_{Ca\left(OH\right)_2}=2.0,2=0,4\left(mol\right)\)
\(T=\dfrac{0,4}{0,1}=4\)
--> Tạo ra muối CaCO3
\(Ca\left(OH\right)_2+CO_2\rightarrow CaCO_3+H_2O\)
0,1 0,1 0,1 ( mol )
\(m_{CaCO_3}=0,1.100=10\left(g\right)\)
Chất dư là Ca(OH)2
\(m_{Ca\left(OH\right)_2\left(dư\right)}=\left(0,4-0,1\right).74=22,2\left(g\right)\)
nCa(OH)2= 2 x 0.2=0.4 mol ; nCO2= 2.24: 22.4=0.1 mol
PT: CO2 + Ca(OH)2 \(\rightarrow\) CaCo3+ H2O
Đb 0.1 0.4 (mol)
PƯ 0.1 \(\rightarrow\) 0.1 (mol)
SPƯ 0 0.3 (mol)
=> CO2 phản ứng hết, Ca(OH)2 dư: 0.3 x 74= 22.2 (g)