Răspuns:
Explicație:
M,CaCO3=100g/mol M,MgCO3=106g/mol
c=mdx100/ms---> md= 584x10/100g=58,4gHCl
niu,HCl=m/M= 58,4g/36,5g/mol= 1,6mol
CaCO3 + 2HCl----> CaCL2 +H2O+CO2.......................ori a moli
MgCO3+2HCl---> MgCl2 + H2O+CO2..........................ORI b moli
fac bilantul de masa de saruri: ax100+bx106= 81,2
fac bilantul de moli de HCl: 2(a+b)=1,6
rezolv sistemul de ecuatii: a= 0,6mol b= 0,2mol
81,2g amestec.......0,6x100gCaCo3.......0,2x106gMgCO3
100G....................................X....................................Y
X= 60X100/81,2 %=.........................CALCULEAZA !!!!
Y= 21,2X100/81,2 %=................................CALCULEAZA !!!!!