Given the system at equilibrium:
2POCl3(g) + energy <==> 2PCl3(g) + O2(g)
Which changes occur when O2(g) is added tothis system?
(1) The equilibrium shifts to the right and the concentration of PCl3(g) increases.
(2) The equilibrium shifts to the right and the concentration of PCl3(g) decreases.
(3) The equilibrium shifts to the left and the concentration of PCl3(g) increases.
(4) The equilibrium shifts to the left and the concentration of PCl3(g) decreases.

Question

HugoDifedeid HugoDifedeid

Chemistry

Answered

Given the system at equilibrium:
2POCl3(g) + energy <==> 2PCl3(g) + O2(g)
Which changes occur when O2(g) is added tothis system?
(1) The equilibrium shifts to the right and the concentration of PCl3(g) increases.
(2) The equilibrium shifts to the right and the concentration of PCl3(g) decreases.
(3) The equilibrium shifts to the left and the concentration of PCl3(g) increases.
(4) The equilibrium shifts to the left and the concentration of PCl3(g) decreases.

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Vongolacentimoid Vongolacentimoid · Answer 1

Vongolacentimoid Vongolacentimoid

(4) The equilibrium shifts to the left and the concentration of PCl3(g) decreases.

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Eduard22slyid Eduard22slyid · Answer 2

Given the data from the question, the correct answer to the question is:

The equilibrium shifts to the left and the concentration of PCl₃(g) decreases. (Option 4)

What is chemical equilibrium?

This is simply defined as a state in a chemical system where there is no observable change in the properties of the system with time.

A French scientist postulated a principle which helps us to understand a chemical system in equilibrium.

The principle states as follow:

If a an external constraint such as change in temperature, pressure or concentration is imposed on a system in equilibrium, the equilibrium will shift so as to neutralize the effect.

How to determine the position of equilibrium constant

Considering the question given above, we are concerned with O₂ (i.e concentration) being added to the reaction

2POCl₃(g) + energy <=> 2PCl₃(g) + O₂(g)

According to the principle given above, if more O₂ is added, then, PCl₃ and O₂ will react to produce more POCl₃. Thus, the equilibrium will shift to the left and also PCl₃ will reduce.

Learn more about chemical equilibrium:

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