Vom avea urmatoarele reactii chimice:
1 mol 1 mol
CH4 + Cl2 -> CH3Cl + HCl
3x moli 3x moli
1 mol 1 mol
CH4 + 2Cl2 -> CH2Cl2 + 2HCl
2x moli 2x moli
1 mol 1mol
CH4 + 3Cl2 -> CHCl3 + 3HCl
x moli x moli
1 mol 1 mol
CH4 + 4Cl2 -> CCl4 + 4HCl
x moli x moli
1 mol 1 mol
CH4-> CH4
x moli x moli
Din raportul molar putem spune ca in amestec exista 3x moli CH3Cl, 2x moli CH2Cl2, x moli CHCl3, CCl4, CH4 nereactionat.
Calculam numarul de moli de clorura de metilen din masa data.
MCH2Cl2=85 g/mol =>n=m/M=85/85=1 mol
2x=1 => x=0,5 moli
In total avem 3x+2x+x+x+x=8x moli de CH4 introdus
=> 8*0,5=4 moli CH4 introdus
VCH4=4*22,4=89,6L CH4 introdus