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?

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:

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

A solution is prepared by dissolving $0.01$ moles of $NH_4Cl$ and $0.1$ moles of $NH_3$ in $1$ L of water. If the $K_b$ for $NH_3$ is $1.8 imes 10^{-5}$, what is the approximate pH of the solution?

In the reaction $AlCl_3 + Cl^- \rightarrow AlCl_4^-$, which acid-base theory best describes the behavior of $AlCl_3$?

For the reversible reaction $N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)$ at 500°C, the value of $K_p$ is $1.44 imes 10^{-5}$. What is the value of $K_c$ at the same temperature? (R = 0.0821 L atm/mol K)

At a certain temperature, the equilibrium constant $K_c$ for the reaction $2NOCl(g) \rightleftharpoons 2NO(g) + Cl_2(g)$ is $4.6 imes 10^{-4}$. If 2.0 moles of NOCl are placed in a 1.0 L container, what are the equilibrium concentrations of NO and $Cl_2$?