Hydrogen, Bromine, Hydrogen Bromide equilibrium Model by Andy Luo Kangshun

Hydrogen, Bromine, Hydrogen Bromide equilibrium Model by Andy Luo Kangshun
another artifact of learning by a Chemistry Tampines JC teacher who attended the EJS-OSP Singapore workshop.

http://weelookang.blogspot.com/2014/12/hydrogen-bromine-hydrogen-bromide.html Hydrogen, Bromine, Hydrogen Bromide equilibrium Model run: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_model_EQB17/EQB17_Simulation.xhtml scr: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_src_EQB17.zip author: Andy Luo Kangshun, Paco and Wolfgang

This simulation emulates the gas phase equilibria between hydrogen, bromine and hydrogen bromide molecules.

Constants:

kB=RNA=1.38060445x1023

R = 8.314

NA=6.022x10−23

Parameters:

Hydrogen are yellow particles. (mass = 2*1.00794 u)

Bromine are red particles. (mass = 2* 79.904 u)

Hydrogen bromide are green particles. (mass = 79.904 + 1.00794 u)

N = 200 molecules

H-H bond: 436 kJ mol-1

Br-Br bond: 193 kJ mol-1

H-Br bond: 366 kJ mol-1

∆H = -103 kJ mol-1

kf=Aexp(−629(8.314)(T))

kb=Aexp(−732(8.314)(T))

Keq=kfkb=exp(1038.314(T)

Fixed relations

 v = Math.sqrt(3*8.314/6.022*10E23*T/mass)