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Le Chatelier's Principle...

Le Chatelier's Principle

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If we make any change (in terms of pressure, volume, concentration of reactant or product) at equilibrium then system try to avoid this change and move in the direction where it can diminished the change occured at equilibrium.
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In a vessel containing SO_(3), SO_(2) and O_(2) at equilibrium, some helium gas is introduced so that total pressure increases while temperature and volume and volume remain the same. According to Le Chatelier's principle, the dissociation of SO_(3) :

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On increasing the pressure, in which dirction will the gas phase reaction proceed to re-establish equilibrium, is predicated by applying the Le Chatelier's principle. Consider the reaction. N_(2)(g)+3H_(2)hArr 2NH_(3)(g) Which of the following is correct, if the total pressure at which the equlibrium is established, is increased without changing the temperature ?

Physical and chemical equilibria can respond to a change in their pressure, temperature, and concentration of reactants and products. To describe the change in the equilibrium, we have a principle named Le Chatelier's principle. This we can define in terms of energy, as the free energy change in equilibrium is zero means the system is stable. So if we are doing some changes in equilibrium, then the system having a tendency to reestablish the equilibrium by undoing the effect we brought. Consider the following equilibrium. Three sparingly soluble salts A_(2)B, AB , and AB_(3) are given. If all the three having the same value of solubility products (K_(sp)) , in the saturated solution, the correct order of their solubilites is

Consider the reactions equilibrium , 2SO_2 (g) + O_2(g) hArr 2SO_3 (g) , Delta H^(@) = - 198 kJ On the basis of Le- Chatelier's Principal , the condition favourable for the forward reaction is

Le - Chatelier principle is not applicable to :

Dissolution of sodium sulphate in water is exothermic (with evolution of heat). If the temperature is raised for a saturated solution of sodium sulphate , then according to Le - Chatelier principle