a) mCH4 = 2*16 =32g
mC2H4 = 0,5*28=14g
m amestec = 32+14 = 46g
%CH4=32/46*100 = Calculeaza !!
%C2H4 = 14/46*100 = Calculeaza !!
V CH4 = 2*22,4= 44,8L
VC2H4 = 0,5*22,4 =11,2 L
V amestec = 44,8+11,2 = 56L
%CH4=44,8/56*100 = Calculeaza !!
%C2H4 = 11,2/56*100 Calculeaza !!
b) CH2=CH2 + Cl2 => Cl-CH2-CH2-Cl
nC2H4 = nCl2 = 0,5 moli Cl2
md Cl2 = 0,5*71 = 35,5g
ms = md*100/C = 3550/2 = 1775g sol Cl2
c) CH4 + 2O2 -> CO2 + 2H2O + Q
C2H4 + 3O2 -> 2CO2 + 2H2O + Q
nCH4=nCO2 = 2 moli
1 mol C2H4..............2 moli CO2
0,5 moli C2H4..........x=1 mol CO2
n CO2 total = 1+2 =3 moli CO2
T=273+27 = 300K
pV=nRT => V=nRT/p = 3*0,082*300/2 = Calculeaza !!