\(PTHH:CaO+2HCl\rightarrow CaCl2+H2O\)
________0,1____________0,1____________
\(CaCO3+2HCl\rightarrow CaCl2+CO2+H2O\)
0,2_____________0,2_________0,2_________
Ta có :
\(n_{CO2}=\frac{4,48}{22,4}=0,2\left(mol\right)\)
\(n_{CaCl2}=\frac{33,3}{111}=0,3\left(mol\right)\)
\(\rightarrow n_{CaCO3}=0,2\left(mol\right),n_{CaO}=0,1\left(mol\right)\)
\(a=m_{CaCO3}+m_{CaO}=0,2.100+0,1.56=25,6\left(g\right)\)
nCaCl2 = 0.3 mol
nCO2 = 0.2 mol
CaCO3 + 2HCl => CaCl2 + CO2 + H2O
0.2_______0.4______0.2____0.2
CaO + 2HCl => CaCl2 + H2O
0.1_____0.2_____0.1
mA = mCaCO3 + mCaO = 0.2*100 + 0.1*56 = 25.6 g
CM HCl = 0.6/0.3 = 2M
