Sciencemadness Discussion Board

balancing / calculation

Broken Gears - 8-8-2006 at 08:22

I hope you guys understand this, I dont know the right technical expressions in english. I having trouble balancing / calculation equations with Organic compounds.

Im working on chlorination of Toluene and I know there are some topic on the subject (benzyl chloride)

H2SO4 + 2NaCL --> 2HCL + Na2SO4

30gr of NaCl is used (81,43g/mol.... 0,368mol) giving 13,78gr HCL gas (37,45g/mol.... 0,368mol)

But now....
HCL + C7H8 --> C6H5.CH2Cl ????

How much HCL gas for how much toluene?
Pleace can someone help me and SHOW me some/all calculations or a "easy" way to balance this?

not_important - 8-8-2006 at 08:26

HCl will not directly chlorinate tolulene, that takes chlorine either as a directly added reactant or formed from (say) HCl through oxidation.

Try the second reaction with Cl2, giving HCL and C7H7Cl

Broken Gears - 9-8-2006 at 12:20

Too bad. It would be nice to get Cl gas from NaCl (salt) by elektrolysis, but...
How about this then: 2 KMnO4 + 16 HCl --> 5 Cl2 + 2 KCl + 2 MnCl2 + 8 H2O
Is that right? And how would that reaction go with the Toluene?