Question

Care este randamentul de transformare a CH4 in CH3Cl daca la clorurarea fotochimica masa de reactie rezultata contine CH3Cl:CH2Cl2:CHCl3:CCl4:CH4 in raport molar de 5:4:3:2:1?

Answer 1

n1 moli CH4 + Cl2 ⇒ CH3Cl + HCl
n2 moli CH4 + 2Cl2 ⇒CH2Cl2 + 2HCl
n3 moli CH4 + 3HCl ⇒ CHCl3 + 3HCl
n4 moli CH4 + 4HCl ⇒ CCl4 + 4HCl
n5 moli CH4 nereactionat
n1/5 = n2/4 = n3/3 = n4/2 = n5/1 = n/15 
n1=n/3     n2= 4n/15     n3= n/5      n4= 2n/15        n5=n/15
η= n1·100/n = 100n/3n = 33,33%