Equilibrium – Ionic Equilibrium, Acids & Bases (Arrhenius, Brønsted, Lewis)
Chemistry · Grade 11 · Week 20 · 25 questions
Equilibrium is a core Grade 11 chemistry chapter covering Ionic Equilibrium and Acids & Bases (Arrhenius, Brønsted, Lewis). A strong base in these ideas makes organic, inorganic, and physical chemistry much more approachable later.
What you'll practise
- Identify Ionic Equilibrium
- Explain Acids & Bases (Arrhenius, Brønsted, Lewis)
- Apply equilibrium concepts to NCERT exercise and exemplar problems
All 25 questions in this Equilibrium – Ionic Equilibrium, Acids & Bases (Arrhenius, Brønsted, Lewis) quiz
Grade 11 Chemistry — Equilibrium – Ionic Equilibrium, Acids & Bases (Arrhenius, Brønsted, Lewis): 25 practice questions with instant scoring and explanations.
- Arrhenius acid:
- Arrhenius base:
- Brønsted acid:
- Brønsted base:
- Conjugate base of HCl:
- Conjugate acid of NH₃:
- Lewis acid:
- Lewis base:
- BF₃ is:
- NH₃ acts as:
- H₂O can act as:
- Autoionization: 2H₂O ⇌ H₃O⁺ + OH⁻ with Kw =
- In pure water at 25°C, [H⁺] = [OH⁻] =
- Strong acid examples:
- Strong base examples:
- Weak acid example:
- Weak base example:
- Ka × Kb =
- pKa + pKb =
- Smaller Ka means:
- Acid strength order: HF, HCl, HBr, HI:
- Oxyacid strength: HOCl, HOBr, HOI:
- Leveling effect: strongest acid in water:
- Degree of ionization α for weak acid is:
- For weak acid HA with conc c, [H⁺] ≈
Question 1 of 250 correct so far