For the reaction POCl3(g) ⇀↽ POCl(g) + Cl2(g) Kc = 0.30. An initial 0.33 moles of POCl3 are placed in a 3.2 L container

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For the reaction POCl3(g) ⇀↽ POCl(g) + Cl2(g) Kc = 0.30. An
initial 0.33 moles of POCl3 are placed in a 3.2 L container with
initial concentrations of POCl and Cl2 equal to zero. What is the
final concentration of POCl3? (Note: You must solve a quadratic
equation.)
1. final concentration = 0.0439189 M
2. final concentration = 0.0219595 M
3. final concentration = 0.081 M
4. final concentration = 0.199 M
5. final concentration = 0.302125 M