mass of COCl2 = 2.55 g
moles of COCl2 = 2.55 / 98.92 = 0.0258 mol
concentration = 0.0258 / 0.025 = 1.03 M
COCl2 (g)Â Â <------------->Â Â CO (g)
+Â Â Cl2 (g)
1.03Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
0Â Â Â Â Â Â Â Â Â Â Â Â Â
0
1.03 -
x                             Â
x              Â
x
Kc = x^2 / 1.03 - x
8.3 x 10-4 = x^2 / 1.03 - x
x = 0.0292
concentration of compounds :
[COCl2] = 1.00 M
[CO] = 0.0292 M
[Cl2] = 0.0292 M
