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Reversible reactions and dynamic equilibrium
Practice Questions

20 CIE IGCSE Chemistry questions on Reversible reactions and dynamic equilibrium, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Reversible reactions and dynamic equilibrium

Question 1 · 1 mark · Difficulty 1/3

Which statement correctly defines a reversible reaction?

  1. A reaction in which products cannot be converted back to reactants under any conditions
  2. A reaction in which the products can react together to re-form the original reactants
  3. A reaction that proceeds in the forward direction only when heated
  4. A reaction that reaches completion when all reactants are used up
Show answer & explanation
✓ Answer: B — A reaction in which the products can react together to re-form the original reactants
A reversible reaction is one in which the products can react together to re-form the original reactants. The symbol ⇌ is used to indicate that the reaction can proceed in both the forward and reverse directions. Reversible reactions do not go to completion.
Question 2 · 1 mark · Difficulty 2/3

The equation for the formation of ammonia is: N₂(g) + 3H₂(g) ⇌ 2NH₃(g). If the pressure is increased, what happens to the equilibrium position?

  1. It shifts to the left, producing more N₂ and H₂
  2. It shifts to the right, producing more NH₃
  3. It remains unchanged because the temperature is constant
  4. It shifts to the right, producing more N₂ and H₂
Show answer & explanation
✓ Answer: B — It shifts to the right, producing more NH₃
Increasing pressure shifts the equilibrium towards the side with fewer moles of gas. The left side has 4 moles of gas (1 + 3) and the right side has 2 moles, so equilibrium shifts to the right, producing more NH₃. This reduces the total number of gas molecules, partially counteracting the pressure increase.
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CIE IGCSE Chemistry: Reversible reactions and dynamic equilibrium FAQ

How many CIE IGCSE Chemistry questions on Reversible reactions and dynamic equilibrium are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Reversible reactions and dynamic equilibrium for CIE IGCSE Chemistry, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CIE paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CIE IGCSE students preparing for Chemistry?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Reversible reactions and dynamic equilibrium practice with other Chemistry topics or even switch to a totally different CIE subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Reversible reactions and dynamic equilibrium questions aligned to the official CIE IGCSE Chemistry syllabus?
Every question is written against the published CIE IGCSE Chemistry specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CIE paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CIE.
How is Reversible reactions and dynamic equilibrium typically tested on CIE IGCSE Chemistry papers?
Reversible reactions and dynamic equilibrium appears across multiple question types on real CIE IGCSE Chemistry papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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