blems for Exam Name 1) What S (I... . Answered e Problems for Exam 1) What is th

Question

blems for Exam Name 1) What S (I... . Answered e Problems for Exam 1) What is the mol... DOLL CHEM 104 Homework 4 4. 20 points-Ch. 17.5 Phos sgene (COCk) is a highly toxic gas that was used as a chemical warfare agent in World War Although it is now banned for that purpose by international agreement, p for industrial uses ( hosgene is still produced a mixture of carbon monoxide and chlorine gases: Kc 4.95 at 600. K If 70.0 mol of each reactant are added to a 5.00x10 L reactor at 600. K, what will the concentrations of all three substances be at equilibrium?

Explanation / Answer

          CO(g)   +      Cl2(g) <===>     COCl2(g)

initial 70/500 = 0.14 M 70/500 = 0.14 M     0 M

change    -x               -x                 +x

equil   0.14-x M          0.14-x M             x M

Kc = 4.95 ,

   Kc = [COCl2]/[CO][Cl2]

   4.95 = x/(0.14-x)^2

x = 0.045

at equilibrium,

[COCl2] = X = 0.045 M

[Cl2] = 0.14-X = 0.14-0.045 = 0.095 M

[CO] = 0.14-X = 0.14-0.045 = 0.095 M

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