Equilibrium – Physical & Chemical Equilibrium, Law of Mass Action
Chemistry · Grade 11 · Week 18 · 25 questions
Equilibrium is a core Grade 11 chemistry chapter covering Physical & Chemical Equilibrium and Law of Mass Action. A strong base in these ideas makes organic, inorganic, and physical chemistry much more approachable later.
What you'll practise
- Calculate Physical & Chemical Equilibrium
- State and apply Law of Mass Action
- Apply equilibrium concepts to NCERT exercise and exemplar problems
All 25 questions in this Equilibrium – Physical & Chemical Equilibrium, Law of Mass Action quiz
Grade 11 Chemistry — Equilibrium – Physical & Chemical Equilibrium, Law of Mass Action: 25 practice questions with instant scoring and explanations.
- Equilibrium is characterized by:
- Physical equilibrium example:
- Chemical equilibrium example:
- At equilibrium, concentrations of reactants and products are:
- Law of mass action states rate ∝ :
- For aA + bB ⇌ cC + dD, Kc =
- Kc depends on:
- Kp for gaseous reactions uses:
- Kp = Kc × (RT)^Δn where Δn is:
- For N₂ + 3H₂ ⇌ 2NH₃, Δn_g =
- Reaction quotient Q uses:
- If Q < K, reaction proceeds:
- If Q > K, reaction proceeds:
- If Q = K:
- Kc for reversed reaction is:
- Kc for doubled reaction:
- Dissociation constant α for aA ⇌ bB is related to Kc via ICE table at:
- At equilibrium, Gibbs energy change ΔG =
- Units of Kc for A + B ⇌ C:
- Units of Kc for A ⇌ B:
- Homogeneous equilibrium: all species in:
- Heterogeneous equilibrium example:
- In heterogeneous equilibrium, pure solids and liquids:
- Relation ΔG° = −RT ln K at equilibrium allows:
- Large K means:
Question 1 of 250 correct so far