Question 1

Which of the following expressions correctly represents the equilibrium constant $K_p$ for the reaction:

$2\ \mathrm{CH_3Cl}(g) + \mathrm{Cl_2}(g) \rightleftharpoons 2\ \mathrm{CH_2Cl_2}(g) + \mathrm{H_2}(g)$?

Accepted Answer

![img2](attachment:image2)

Question 2

Which of the following expressions correctly represents the equilibrium constant $K_p$ for the reaction:

$\mathrm{CH_3Cl}(g) + \frac{1}{2}\mathrm{Cl_2}(g) \rightleftharpoons \mathrm{CH_2Cl_2}(g) + \frac{1}{2}\mathrm{H_2}(g)$?

Accepted Answer

![img5](attachment:image5)

Question 3

Which of the following expressions correctly represents the equilibrium constant $K_p$ for the reaction:

$\mathrm{N_2}(g) + 3\mathrm{H_2}(g) \rightleftharpoons 2\mathrm{NH_3}(g)$?

Accepted Answer

![img12](attachment:image12)

Question 4

Which of the following expressions correctly represents the equilibrium constant $K_p$ for the reaction:

$2\mathrm{NH_3}(g) \rightleftharpoons \mathrm{N_2}(g) + 3\mathrm{H_2}(g)$?

Accepted Answer

![img14](attachment:image14)

Question 5

Which of the following expressions correctly represents the equilibrium constant $K_p$ for the reaction:

$\mathrm{PCl_5}(g) \rightleftharpoons \mathrm{PCl_3}(g) + \mathrm{Cl_2}(g)$?

Accepted Answer

![img20](attachment:image20)

Question 6

Which of the following expressions correctly represents the equilibrium constant $K_p$ for the reaction:

$\mathrm{H_2}(g) + \mathrm{Br_2}(g) \rightleftharpoons 2\mathrm{HBr}(g)$?

Accepted Answer

![img23](attachment:image23)

Question 7

Which of the following expressions correctly represents the equilibrium constant $K_p$ for the reaction:

$2\mathrm{P}(g) + 3\mathrm{Cl_2}(g) \rightleftharpoons 2\mathrm{PCl_3}(g)$?

Accepted Answer

![img25](attachment:image25)

Question 8

Which of the following expressions correctly represents the equilibrium constant $K_p$ for the reaction:

$\mathrm{P}(g) + \frac{3}{2}\mathrm{Cl_2}(g) \rightleftharpoons \mathrm{PCl_3}(g)$?

Accepted Answer

![img31](attachment:image31)

Question 9

Which of the following expressions correctly represents the equilibrium constant $K_c$ for the reaction:

$\mathrm{P_4}(s) + 5\mathrm{O_2}(g) \rightleftharpoons \mathrm{P_4O_{10}}(s)$?

Accepted Answer

![img35](attachment:image35)

Expressing Equilibrium Constants for Gas-Phase Reactions

Study Guide - Practice Questions