n1 moli CH4 + Cl2 = CH3Cl + HCl
n2 moli CH4 + 2Cl2 = CHCl2 + 2HCl
n3 moli CH4 + 3Cl2 = CHCl3 + 3HCl
n4 moli CH4 + 4Cl2 = CCl4 + 4HCl
n1/3 = n2/2 = n3/1 = n4/1 = n/ 7 n1 = 3n/7 n2 = 2n/7 n3 = n4 = n/7
nCl2 = n1 + 2n2 + 3n3 + 4n4 = 3n/7 + 4n/7 + 3n/7 + 4n/7 = 2n
nCH4 / nCl2 = n/7 x 1/2n = 1/14