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Chemical Equilibrium
NEET Chemistry • 10 questions • Free on ExamBattle
Practice Questions
Q1
At equilibrium, the rate of forward reaction:
- A. Is zero
- B. Equals rate of reverse reaction
- C. Is greater than reverse reaction
- D. Is less than reverse reaction
Q2
For the reaction N₂ + 3H₂ ⇌ 2NH₃, Kc is expressed as:
- A. [NH₃]²/([N₂][H₂])
- B. [NH₃]²/([N₂][H₂]³)
- C. [N₂][H₂]³/[NH₃]²
- D. [NH₃]/([N₂][H₂])
Q3
Le Chatelier's principle states that a system at equilibrium responds to a stress by:
- A. Increasing forward reaction only
- B. Shifting to partially counteract the stress
- C. Achieving a new equilibrium with same Kc
- D. Stopping the reaction
Q4
If Kc > 1, the equilibrium position lies:
- A. Towards reactants
- B. Towards products
- C. Exactly in middle
- D. Cannot be determined
Q5
For the reaction PCl₅ ⇌ PCl₃ + Cl₂, increasing pressure will:
- A. Increase yield of PCl₃
- B. Decrease yield of PCl₃
- C. Have no effect
- D. Change Kc
Q6
The relationship between Kp and Kc is:
- A. Kp = Kc (RT)^Δn
- B. Kp = Kc/RT
- C. Kp = Kc + RT
- D. Kp = Kc × T
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