In which of the following reactions at equili | vedclass

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(C) According to Le Chatelier's principle,when the total pressure of a system at equilibrium is increased,the equilibrium shifts in the direction that

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$(I)$

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(C) According to Le Chatelier's principle,when the total pressure of a system at equilibrium is increased,the equilibrium shifts in the direction that results in a decrease in the total number of gaseous moles.For reaction $(I)$: $X_{2(g)} + 3Y_{2(g)} \rightleftharpoons 2XY_{3(g)}$. The number of gaseous moles on the reactant side is $1 + 3 = 4$,and on the product side is $2$. Since $2 For reactions $(II)$,$(III)$,and $(IV)$: The number of gaseous moles on the reactant side is $1 + 1 = 2$,and on the product side is $2$. Since the number of moles is equal on both sides,a change in pressure does not affect the position of the equilibrium.

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