What condition favours the formation of the product for the endothermic reaction, \(N _{2} O _{4( g )} \leftrightarrow 2 NO _{2( g )}\) ?
A. A decrease in pressure B. A decrease in volume C. An increase in pressure D. A constant volume
Correct Answer: A
Explanation
For an endothermic system at equilibrium: increasing the pressure (decrease in volume) favours the net reaction that decreases the total no of moles of gas (i.e. \(2 NO _{2(\xi)} \rightarrow\) \(N _{2} O _{\text {4is }}\) ); decreasing the pressure (increase in volume) faof gases, (i.e. of gases, (i.c. \(N _{2} O _{4( g )} \rightarrow 2 NO _{2( g )}\) )
