Chemical Equilibrium Quiz

Test your chemistry knowledge with this challenging chemical equilibrium quiz! Covers Kc, Kp, Le Chatelier's principle, solubility product, and more. Perfect for exam preparation.

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1. In a reversible reaction, equilibrium is established when:

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2. If Kc for a reaction is very large, it indicates that:

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3. If Kc = 4 for a reaction, what is the value of Kc for the reverse reaction?

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4. According to Le Chatelier's principle, increasing the pressure in the reaction: 2SO2(g) + O2(g) ⇌ 2SO3(g) will:

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5. In an endothermic reaction, increasing the temperature will:

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6. Which of the following factors affects the equilibrium constant?

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7. For the equilibrium A(g) ⇌ 2B(g), if the initial pressure of A is 1 atm and at equilibrium the partial pressure of B is 1.6 atm, what is the partial pressure of A at equilibrium?

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8. The solubility product (Ksp) of AgCl is 1.8 × 10⁻¹⁰. What is the concentration of Ag⁺ ions in a saturated solution?

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9. The common ion effect describes

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10. In the Haber process, the optimum temperature is around 450°C. This is a compromise because:

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11. Which of the following changes will shift the equilibrium to the right for the reaction: A(g) + B(g) ⇌ C(g) + heat?

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12. For the reaction 2A(g) + B(g) ⇌ C(g), if the initial moles of A and B are 2 and 1 respectively, and at equilibrium, the moles of C are 0.8, what are the moles of A at equilibrium?

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13. Which of the following is true for a reaction at equilibrium where ΔG = 0?

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14. Which of the following will decrease the solubility of AgCl in water?

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15. In the reaction: PCl5(g) ⇌ PCl3(g) + Cl2(g), increasing the volume of the container will:

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16. What is the effect of adding an inert gas at constant volume on the equilibrium: N2(g) + 3H2(g) ⇌ 2NH3(g)?

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17. For a reaction with Δn = 0, which of the following is true?

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18. The reaction: 2NO(g) + O2(g) ⇌ 2NO2(g) has ΔH < 0. Which change will favor the formation of NO2?

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19. If the reaction quotient (Qc) is less than Kc, the reaction will:

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20. If a saturated solution of lead chloride (PbCl₂) has a lead ion concentration [Pb²⁺] = x, then the solubility product (Ksp) is equal to:

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21. The equilibrium constant for the reaction 2X(g) ⇌ Y(g) is 0.25. What is the equilibrium constant for the reaction Y(g) ⇌ 2X(g)?

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Topics Covered in the Quiz:

  • Chemical Equilibrium Basics
  • Equilibrium Constant (Kc, Kp)
  • Le Chatelier’s Principle
  • Factors Affecting Equilibrium
  • Haber Process
  • Solubility Product (Ksp)
  • Common Ion Effect
  • Relationship between Kc and Kp
  • Reaction Quotient (Qc)