NEET Chemistry Chemical Equilibrium MCQs

A system at equilibrium consisting of $N_2(g)$, $O_2(g)$ and $NO(g)$ in a sealed vessel at constant temperature is subjected to a sudden increase in pressure. According to Le Chatelier's principle, which of the following is most likely to occur?

The solubility product ($K_{sp}$) of $AgCl$ in water at 25°C is $1.8 imes 10^{-10}$. A solution of $AgCl$ in water is in equilibrium with solid $AgCl$. If a small amount of $NaCl$ is added to this saturated solution, what will happen to the solubility ($s$) and $K_{sp}$ of $AgCl$?

Consider the endothermic reaction: $N_2O_4(g) \rightleftharpoons 2NO_2(g)$. A sealed container filled with an equilibrium mixture of $N_2O_4$ and $NO_2$ is suddenly immersed in an ice bath. Which of the following changes will occur initially?

In the Haber-Bosch process for ammonia synthesis, $N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)$, the reaction is exothermic. To maximize ammonia yield at high pressure, which catalyst would theoretically be most effective, assuming all are equally active at standard conditions?

A reaction $A(g) + B(g) \rightleftharpoons C(g)$ has a $K_c$ of 0.1 at 298 K. If initially 1 mole each of A and B are introduced into a 1L vessel, and the system is allowed to reach equilibrium, what approximate pressure change ($\Delta P$) must be applied to double the equilibrium concentration of C?

A sealed container holds an equilibrium mixture of $N_2O_4(g)$ (colorless) and $NO_2(g)$ (brown). The forward reaction is endothermic. Which of the following changes will NOT result in an increase in the intensity of the brown color within the container?

A weak base, BOH, has a $K_b$ of $1.0 imes 10^{-5}$. A 0.1 M solution of BOH is titrated with 0.1 M HCl. At the equivalence point, the pH of the resulting solution will be closest to:

Which statement correctly describes the relationship between the Lewis acid-base theory and the Brønsted-Lowry theory?

According to the Lux-Flood definition, which of the following acts as an acid?

Which of the following species can act as both a Brønsted-Lowry acid and a Lewis base?