Explanation:
Le Chatelier's principle states that if a dynamic equilibrium system is disturbed by changing for example pressure, temperature, or concentration of products or reactants, the equilibrium will shift in the opposite direction to offset the change.
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An example to understand better this principle:
Given a general reaction in equilibrium:
A (g) + B (g) <=> C (g) + D (g) ΔH < 0 (it means an exothermic reaction)
This reaction can be seen as follows:
A (g) + B (g) <=> C (g) + D (g) + energy (exothermic reaction = releases energy)
If the temperature increases or heat is added, the equilibrium will shift to the left because of the principle. (There are many examples)
