Cu2S + 2O2---> 2CuO + SO2
CuO + C---> Cu + CO
Cu + 2H2SO4-----> CuSO4 + SO2+ 2H2O
CuSO4+2NaOH----> Na2SO4+Cu(OH)2↓
Cu(OH)2+ 2HCl---> CuCl2 + 2H2O
CuCl2 + 2HNO3---> Cu(NO3)2+
1kmolCu2S.......0,5kmol Cu.......0,5kmolCuSO4......0,5kmolCu(OH)2
160.kg.............64/2kg..........................160/2kg..............98/2kg
m,Cu2S,impu3= 1000kg
p= 80%=m,px100/m,i----> m,p= 800kg introdu aceasta valoare ,mai sus, sub 160kg si calculeaza masele care se cer !!!!!