6.
-calculez moli Cl2 ,din ecuatia de stare a gazelor
pV= niuRT, unde p= 800mm/760mm/atm=1,05 atm
1.05x9,4= niux0,082x(273+27) niu.Cl2=0,4mol
-calculez moli NaI si I2 din ecuatia chimica
1mol.........2mol....................1mol
Cl2 + 2NaI----> 2NaCl + I2
0,4mol....x=0,8mol.............y= 0,4mol
-calculez masa solutiei
m,d=mNaCl= niuxM= 0,8X150g/mol=120g
c= mdx100/ms---> ms= 120x100/35=..............................calculeaza !!!!
-calculez masa de iod
niu,teoretic= 0,4
niu,practic=0,4x80/100= 0,32mol
m= niuxM= 0,32molX254g/mol=...........................calculeaza !!!!
