n,alcan =V/Vo--->n=4,48/22,4 l/mol= 0,2mol
n,CO2=m/M; n= 26,4g/44g/mol=0,6molCO2=0,6mol C
0,2mol alcan......0,6molC
1mol...................3molC------> PROPAN C3H8
b CH3-CH2-CH3-------> CH2=CH2 +CH4 CRACARE
--------> C2=CH-CH3+h2 dehidrogenare
c. din 4moli propan n=70/100x4= 2,8 moli se dehidrogeneaza iar (40-2,8)=1,2moli sufera cracarea---. >
total moli gaze: 1,2mol etena + 1,2mol metan + 2,8mol propena + 2,8mol H2---> 7moli de gaze
V= 7molx22,4l/mol=......... calculeaza !!!!
d. n= 2800l/22,4l/mol=125mol AER
nO2= 125/5 mol= 25mol O2
C3H8 + 5O2--> 3CO2+4H2O
1mol.......5mol
n..............25.....
.n= 5mol C3H8;
m= n=M=> m= 5molx 44g/mol= calculeaza !!!!