NEET Chemistry Equilibrium Class 11 Questions

Four forces are acting at a point P in equilibrium as shown in figure. The ratio of force F₁ to F₂ is 1 : x where x = _____.

The solubility of BaSO₄ in water is 2.42 × 10⁻³ g L⁻¹ at 298 K. The value of its solubility product (Ksp) will be (Given molar mass of BaSO₄ = 233 g mol⁻¹)

Kₐ, Kₓ and Kₑ are the respective ionisation constants for the following reactions. H₂S ⇌ H⁺ + HS⁻ HS⁻ ⇌ H⁺ + S²⁻ H₂S ⇌ 2H⁺ + S²⁻ The correct relationship between Kₐ, Kₓ and Kₑ is

If K₁ and K₂ are the respective equilibrium constants for the two reactions

XeF₆(g) + H₂O(g) ⇌ XeOF₄(g) + 2HF(g)

XeO₄(g) + XeF₆(g) ⇌ XeOF₄(g) + XeO₃F₂(g)

The equilibrium constant of the reaction

XeO₄(g) + 2HF(g) ⇌ XeOF₄(g) + H₂O(g) will be

What will be the solubility of AgCl in 0.05 M NaCl aqueous solution if solubility product of AgCl is 1.5 × 10⁻¹⁰?

For the following reaction:

NO(g) + O₃(g) ⟶ NO₂(g) + O₂(g)

The value of Kc is 8.2 x 10⁴. What will be the value of Kc for the reverse reaction?

PCl₅, PCl₃ and Cl₂ are at equilibrium at 500 K in a closed container and their concentrations are 0.8 × 10⁻³ mol L⁻¹, 1.2 × 10⁻³ mol L⁻¹ and 1.2 × 10⁻³ mol L⁻¹ respectively. The value of Kc for the reaction : PCl₅(g) ⇌ PCl₃(g) + Cl₂(g) will be:

In which of the following reactions, the equilibrium remains unaffected on addition of small amount of argon at constant volume?

The solubility of AgCl(s) with solubility product 1.6 × 10⁻¹⁰ in 0.1 M NaCl solution would be

Which of the following will produce a buffer solution when mixed in equal volumes?

What is the relationship between the equilibrium constant for a forward reaction and the equilibrium constant for its reverse reaction?

What type of acids are known to have more than one ionizable proton per molecule?

What is the conjugate base of hydrochloric acid (HCl)?

What is the value of R, the universal gas constant, when expressed in bar litre/mol K?

What is the equilibrium constant expression for the dissociation of acetic acid (HAc) in water?

What is the nature of water in the context of acid-base reactions?

What is the equilibrium established between in weak electrolytes?

What happens to the equilibrium when the concentration of SCN– ions decreases in the reaction involving [Fe(SCN)] 2+?

What is the value of the equilibrium constant K_w for the reaction 2 H_2O(l) ⇌ H_3O^+(aq) + OH^-(aq)?

What is the relationship between the concentration of hydronium ions and hydroxyl ions in pure water at equilibrium?

Which of the following statements about the equilibrium constant (Kc) is correct?

Which of the following statements about chemical equilibrium is correct?

Which of the following statements about ionization constants and pH is correct?

Which of the following statements about equilibrium and solubility is correct?

Which of the following statements about equilibrium and its shifts is correct?

Which of the following statements about weak acids and their conjugate bases is correct?

Which of the following statements about the equilibrium of a reaction is correct?

Which of the following statements about the equilibrium of the reaction PCl5 (g) ⇌ PCl3 (g) + Cl2 (g) is correct?

Which of the following statements about equilibrium constants and their relationships is correct?

Which of the following statements about equilibrium in chemical reactions is correct?

Which of the following statements about chemical equilibrium and Le Chatelier's Principle is correct?

Assertion (A): BF3 can act as an acid without containing a proton.

Reason (R): BF3 is an electron-deficient species that can accept a lone pair of electrons.

Assertion (A): The equilibrium constant for a reaction has a unique value at a particular temperature.

Reason (R): The equilibrium constant for the reverse reaction is equal to the inverse of the equilibrium constant for the forward reaction.

Assertion (A): The equilibrium mixture of H2, I2, and HI is the same whether starting from pure reactants or pure product.

Reason (R): At equilibrium, the concentrations of H2, I2, and HI become constant regardless of the starting conditions.

Assertion (A): The equilibrium constant K for a reaction with a positive ΔG° is less than 1.

Reason (R): A reaction with a positive ΔG° is non-spontaneous and proceeds to a very small extent.

Assertion (A): The solubility product (Ksp) of a salt of a weak acid increases at lower pH.

Reason (R): At lower pH, the concentration of the anion decreases due to protonation, which increases the solubility of the salt.

Assertion (A): Removal of a product from a reaction mixture shifts the equilibrium towards the products.

Reason (R): Removing a product decreases the reaction quotient (Q_c) compared to the equilibrium constant (K_c).

Assertion (A): The equilibrium constant Kc for a reaction is not affected by changes in the initial concentrations of reactants.

Reason (R): The concentration of pure solids and liquids is constant and does not appear in the equilibrium constant expression.

Assertion (A): The molar solubility of Ni(OH)2 in water is higher than that of AgCN.

Reason (R): The Ksp value of Ni(OH)2 is greater than that of AgCN.

Assertion (A): The equilibrium constant Kc for the reaction H2(g) + I2(g) ⇌ 2HI(g) is a constant value that depends on the stoichiometric coefficients of the reaction.

Reason (R): The expression for Kc in this reaction is derived from the concentrations of HI, H2, and I2 at equilibrium, raised to the power of their stoichiometric coefficients.

Assertion (A): In pure water, equilibrium exists between H2O molecules and their ions.

Reason (R): Water can act both as an acid and a base, leading to self-ionization.

Assertion (A): In the thermal decomposition of calcium carbonate, the equilibrium constant Kc depends solely on the concentration of CO2 gas.

Reason (R): Both CaO and CaCO3 are solids and their concentrations remain constant during the reaction.

Match Column-I with Column-II.

What is the relationship between the equilibrium constants of a conjugate acid-base pair?

What is the relationship between the equilibrium constant for a forward reaction and its reverse reaction?

What happens to the equilibrium constant of a reaction when the temperature is increased?

What happens to the color intensity of a solution when potassium thiocyanate is added?

What is the expression for the reaction quotient, Qc, for the reaction involving hydrogen iodide (HI), hydrogen (H2), and iodine (I2)?

What is the ionization constant (K_a) of a weak acid HX defined as?

What is the expression for the solubility product constant (Ksp) for barium sulphate (BaSO4)?