What happens when the concentration of H_(2) and I_(2) are increased in the reaction H_(2)+I_(2)hArr2HI ?

What happens when the concentration of H_(2) and I_(2) are increased i

1.	What happens when the concentration of H_(2) and I_(2) are increased in the reaction H_(2)+I_(2)hArr2HI ?
Answer» Solution :According to Le Chatelier's principle, the effect of increases in concentration of a substance is to SHIFT the equilibrium in a direction that consumes the added substance. Let us consider the REACTION `H_(2)(G)+I_(2)(g)hArr2HI(g)` The addition of `H_(2)` or `I_(2)` to the equilibrium mixture disturbs the equilibrium. In order to minimize the stress, the system shifts the reaction in a direction where `H_(2)` and `I_(2)` are consumed i.e., the formation of additional HI would balance the effect of added reactant. Hence, the equilibrium SHIS to the right (forward direction) i.e. the forward reaction takes place until the equilibrium is re-established. Similarly, REMOVAL of HI (product) also favours the forward reaction.