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level: Factors that affect equilibrium

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level questions: Factors that affect equilibrium

QuestionAnswer
What is the effect of temperature change on chemical systems at equilibrium?Considering the enthalpy change for the forward and reverse reactions; an endothermic forward reaction will shift to the right with increasing temperature, while an exothermic forward reaction will shift to the left.
Define Le Châtelier’s principle.If a system in equilibrium is subjected to a change in temperature, pressure, or concentration, the system will adjust to counteract the change and restore equilibrium.
What is the effect of changing concentration and pressure on chemical systems at equilibrium (applying collision theory).Shifts the chemical equilibrium of a reaction by affecting the rate of forward and reverse reactions based on collision theory; increasing concentration or pressure favors side with less moles of gas, while decreasing concentration or pressure shifts the equilibrium in the direction to oppose the change.