Question

1. Consider the following reaction where K_c = 1.20×10^-2at 500 K:

PCl₅(g) ------ PCl₃(g) + Cl₂(g)

A reaction mixture was found to contain 0.136 moles of PCl₅(g), 2.47×10^-2moles ofPCl₃(g), and 4.45×10^-2moles of Cl₂(g), in a 1.00 liter container.

Indicate True (T) or False (F) for each of the following:

___TF 1. In order to reach equilibrium PCl₅(g) must be produced .
___TF 2. In order to reach equilibrium K_c must decrease .
___TF 3. In order to reach equilibrium PCl₃must be produced .
___TF 4. Q_c is less than K_c.
___TF 5. The reaction is at equilibrium. No further reaction will occur.

2. Consider the following reaction where K_c = 83.3 at 500 K:  

PCl₃(g) + Cl₂(g) -------PCl₅(g)  

A reaction mixture was found to contain 2.20×10^-2 moles of PCl₃(g), 4.31×10^-2 moles of Cl₂(g) and 0.110 moles of PCl₅(g), in a 1.00 Liter container.

Indicate True (T) or False (F) for each of the following:

___TF 1. In order to reach equilibrium PCl₅(g) must be consumed.
___TF 2. In order to reach equilibrium K_c must decrease.
___TF 3. In order to reach equilibrium PCl₃ must be produced.
___TF 4. Q_c is greater than K_c.
___TF 5. The reaction is at equilibrium. No further reaction will occur.

Answer 1