Chemical equilibrium is a form of dynamic equilibrium. This means that although the equilibrium concentrations of reaction components appear static, the reaction is not static. This is because of the fact that at equilibrium individual rates of forward and reverse reactions are equal and the amount of reactants that depletes to yield products is recuperated by the conversion of products back into reactants through a reverse reaction.
This equilibrium can be disturbed through the application of stress on the system, such as the increase in the concentration of either of reactants or the products or changes in temperature.
The following reaction has KP = 4.50 × 10−5 at 720 K.
N2(g) + 3H2(g) ⇌ 2NH3(g)
If a reaction vessel is filled with each gas to the partial pressures listed, in which direction will it shift to reach equilibrium? P(NH3) = 93 atm, P(N2) = 48 atm, and P(H2) = 52
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