If a reaction is exothermic and produces large quantities of heat reaching equilfrium, its equilibrium constant will be
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zero, because the reaction will not have an equilibrium constant.
negative, because it is an exothermic reaction.
greater than zero.
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Part D
Consider the reaction
\[
\mathrm{N}_{2} \mathrm{O}_{4}(\mathrm{~g}) \rightarrow 2 \mathrm{NO}_{2}(\mathrm{~g})
\]
where \( \mathrm{N}_{2} \mathrm{O}_{4} \) is colorless and \( \mathrm{NO}_{2} \) is brown. At a temperature of \( 5^{\circ} \mathrm{C} \) the reaction is colorless at equilibrium. This constant for this reaction at this temperature is