. The equilibrium constant of a gas-phase reaction increasesas temperature is increased. When the nonreacting gasneon is admitted to a mixture of reacting gases (holdingthe temperature and the total pressure fixed and increasing the volume of the reaction vessel), the product yield isobserved to decrease.(a) Is the reaction exothermic or endothermic?(b) Is there a net increase or a net decrease in the number     of gas molecules in the reaction?

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