Pure ammonia is placed in a vessel at a temperature where its dissociation constant `(alpha)` is appreciable. At equilibrium,A. `K_(p)` does not change significantly with pressureB. `alpha` does not change with pressureC. The concentration of `NH_(3)` does not change with pressure.D. The concentration of hydrogen is less than that of nitrogen.

Pure ammonia is placed in a vessel at a temperature where its dissocia

1.	Pure ammonia is placed in a vessel at a temperature where its dissociation constant `(alpha)` is appreciable. At equilibrium,A. `K_(p)` does not change significantly with pressureB. `alpha` does not change with pressureC. The concentration of `NH_(3)` does not change with pressure.D. The concentration of hydrogen is less than that of nitrogen.
Answer» Correct Answer - A The equilibrium constant does not change at all with changes in concentrations, pressure, presence of catalyst, etc. It changes only with changes in temperature of the system. For endothermic reaction, the value of K increases with increase in temperature and vice versa. For exothermic reaction, the value of K decreases with increase in temperature and vice versa.

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