CBSE Class 11 Equilibrium — practice questions
29 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 Equilibrium in the app →For the reaction $N_2 + 3H_2 \rightleftharpoons 2NH_3$, the equilibrium constant is:Increasing pressure on the equilibrium $N_2 + 3H_2 \rightleftharpoons 2NH_3$ shifts it:The pH of a solution with $[H^+] = 10^{-3}$ M is:A buffer is made by mixing $0.1$ M acetic acid ($pK_a = 4.74$) with $0.1$ M sodium acetate. The pH is:For the reaction 2A + B ⇌ 3C + D, the equilibrium constant Kc is:In the synthesis of ammonia (N2 + 3H2 ⇌ 2NH3 + heat), increasing the TEMPERATURE will:In an exothermic reaction, as temperature INCREASES, the equilibrium constant Kc:According to the Bronsted-Lowry theory, an acid is:A solution with pH = 4 is:A BUFFER solution is best described as:A solution of NH4Cl (ammonium chloride) in water is:If the solubility of AgCl is s mol/L in pure water, then its Ksp is:Adding NaCl (sodium chloride) to a saturated AgCl solution will:A reversible chemical reaction is said to be at DYNAMIC equilibrium whenFor a gas-phase reaction at temperature $T$, the relationship between the equilibrium constants $K_p$ (in partFor the reaction $\mathrm{H_2(g)} + \mathrm{I_2(g)} \rightleftharpoons 2\mathrm{HI(g)}$, the equilibrium constIf the equilibrium $\mathrm{N_2(g)} + 3\mathrm{H_2(g)} \rightleftharpoons 2\mathrm{NH_3(g)}$ has equilibrium cFor the gas-phase reaction $2\mathrm{SO_2(g)} + \mathrm{O_2(g)} \rightleftharpoons 2\mathrm{SO_3(g)}$, the valA CATALYST is added to a system at equilibrium. Which of the following effects does the catalyst have?At a given temperature, the reaction quotient $Q$ for a reaction is found to be LESS than the equilibrium consFor the equilibrium $\mathrm{N_2O_4(g)} \rightleftharpoons 2\mathrm{NO_2(g)}$, the system is suddenly COMPRESSFor the EXOTHERMIC reaction $\mathrm{N_2(g)} + 3\mathrm{H_2(g)} \rightleftharpoons 2\mathrm{NH_3(g)}, \Delta HFor the reaction $\mathrm{CaCO_3(s)} \rightleftharpoons \mathrm{CaO(s)} + \mathrm{CO_2(g)}$ at equilibrium, thAn INERT GAS (e.g. argon) is added to an equilibrium mixture of $\mathrm{N_2(g)} + 3\mathrm{H_2(g)} \rightleft$0.5$ mole of $\mathrm{PCl_5(g)}$ is placed in a $1\,\text{L}$ vessel at a certain temperature. At equilibriumConsider the equilibrium $\mathrm{N_2(g)} + 3\mathrm{H_2(g)} \rightleftharpoons 2\mathrm{NH_3(g)}$. The value For the equilibrium $\mathrm{N_2(g)} + 3\mathrm{H_2(g)} \rightleftharpoons 2\mathrm{NH_3(g)}$, $\Delta H < 0$ At a certain temperature, $K_c = 4$ for the equilibrium $A(g) \rightleftharpoons B(g)$. If the value of $K_c$ Consider the gas-phase equilibrium $A(g) + B(g) \rightleftharpoons 2C(g)$ at constant temperature. If the volu