Consider the following gas - phase reaction : `2A(g)+B(g)rArrC(g)+D(g)` An equilibrium mixture of reactants and products is subjected to the following changes :- (I) A decrease in volume (II) An increase in temperature (III) Addition of reactants (IV) Addition of an inert gas at constant volume . Which of these changes affect the composition of the equilibrium mixture but leaves the value of `K_(c)` unchanged : -A. I, IIB. I, II, IIIC. II, III, IVD. I, III

Consider the following gas - phase reaction : `2A(g)+B(g)rArrC(g)+D(g)

1.	Consider the following gas - phase reaction : `2A(g)+B(g)rArrC(g)+D(g)` An equilibrium mixture of reactants and products is subjected to the following changes :- (I) A decrease in volume (II) An increase in temperature (III) Addition of reactants (IV) Addition of an inert gas at constant volume . Which of these changes affect the composition of the equilibrium mixture but leaves the value of `K_(c)` unchanged : -A. I, IIB. I, II, IIIC. II, III, IVD. I, III
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