5x 5x
CH4 + Cl2 --> CH3Cl + HCl
2x 2x
CH4 + 2Cl2 --> CH2Cl2 + 2HCl
x x
CH4 + 3Cl2 --> CHCl3 + 3HCl
x x
CH4 + 4Cl2 --> CCl4 + 4HCl
x x
CH4 ------------> CH4 netransformat
=> 5x+2x+x+x+x = 224/22,4 = 10 moli => x = 1
=> %CH4 transformat in CH3Cl = 5x100/10x = 50%