A mixture of gases at 450∘C is at equilibrium for the reaction N2(g)+3H2(g)⇌2NH3(g) with Kp=4.0. The volume of the rigid container is then suddenly reduced by one-half at constant temperature.
Immediately after the compression (before any shift occurs), which of the following describes the value of the new reaction quotient Qp relative to Kp and the expected net shift? (Assume ideal-gas behavior.)
a) Qp>Kp; the reaction will shift toward NH3.
b) Qp=Kp; no net shift will occur.
c) Qp<Kp; the reaction will shift toward NH3.
d) Qp<Kp; the reaction will shift toward N2 and H2.