Theo đề bài ta có : nCO2 = 4,4/22,4 = 0,2(mol)
a) PTHH :
\(CaCO3+2HCl->CaCl2+H2O+CO2\uparrow\)
0,2mol..........0,4mol............0,2mol.................0,2mol
b) Ta có :
%mCaCO3 = \(\dfrac{0,2.100}{31,1}.100\%\approx64,3\%\)
%mCaCl2 = 100% - 64,3% = 35,7%
c) Ta có :
mddHCl = \(\dfrac{0,4.36,5.100}{14,6}=100\left(g\right)\)
C%ddCaCl2 = \(\dfrac{0,2.111}{31,1+100-0,2.2}.100\%\approx16,99\%\)