Question

rezolvati repede va rog

Answer 1

CO2+H2O--> H2CO3

CaCO3 + 2HCl---> CaCL2 + H2CO3

2KCl+H2SO4---> K2SO4 + 2HCl

H2+Cl2==> 2HCl

M,NaCl= 58,5g/mol----> niu=m/M= 3mol

2mol........1mol.....................................2mol

2NaCl + H2SO4----> Na2SO4 + 2HCl

3mol.......x= 1,5mol.............................y=3mol

M=98g/mol---> m=niuxM= 1,5X98g=147gH2SO4=md

c=mdx100/ms---> ms= 147x100/36,5g=402,7g

ms= md+m,apa-----> m,apa=402,7-147.......................calculeaza !!!!!