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Sagot :
(4) The equilibrium shifts to the left and the concentration of PCl3(g) decreases.
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:
https://brainly.com/question/4289021
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