Which of the following reaction will occur during the substitution reaction of methane with chlorine to form carbon tetrachloride?
(i) CH4(g)+Cl2(g)→CH3Cl(g)+HCl(g)
(ii) CH3Cl(g)+Cl2(g)→CH2Cl2(g)+HCl(g)
(iii) CH2Cl2(g)+Cl2(g)→CHCl3(g)+HCl(g)
(iv) CHCl3(g)+Cl2(g)→CCl4(g)+HCl(g)
Since in each step only one hydrogen atom gets replaced by chlorine atom. Therefore, the reaction which will not occur during the substitution reaction of methane with chlorine to form carbon tetrachloride is given as:
CH4(g)+Cl2(g)→CH2Cl2(g)+HCl(g)