Eduqas A Level Chemistry
Eduqas A Level Chemistry 1.7 Equilibria and Acid-base Reactions Exam Questions
Free Eduqas A Level Chemistry exam questions on 1.7 Equilibria and Acid-base Reactions, with mark schemes. Covers reversible reactions, Le Chatelier's principle, acids and bases, pH and titrations.
1.7 Equilibria and Acid-base Reactions exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
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A Level Chemistry Flashcards
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Pick your exam board, then test yourself with the questions on this page.
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About Eduqas A Level Chemistry 1.7 Equilibria and Acid-base Reactions
This topic covers simple equilibria and acids. Expect Le Chatelier and titration questions.
What you need to know
- Dynamic equilibrium Forward and reverse rates are equal in a closed system.
- Le Chatelier's principle The position of equilibrium shifts to oppose a change in concentration, pressure or temperature.
- Acids and bases Brønsted-Lowry definitions; strong and weak acids.
- pH and titrations pH = -log[H⁺] for strong acids; acid-base titrations.
Common mistakes in 1.7 Equilibria and Acid-base Reactions
- Saying a catalyst shifts equilibrium position.
- Confusing strong with concentrated.
- Forgetting that equilibria are dynamic.
Try three 1.7 Equilibria and Acid-base Reactions exam-style questions
1. State the effect of increasing pressure on N₂ + 3H₂ ⇌ 2NH₃. (2 marks)
Show the mark scheme answer
Equilibrium shifts right (1) because there are fewer moles of gas on the right (1).
2. Calculate the pH of 0.01 mol dm⁻³ HCl. (1 mark)
Show the mark scheme answer
pH = -log(0.01) = 2.
3. Define a Brønsted-Lowry acid. (1 mark)
Show the mark scheme answer
A proton donor.
1.7 Equilibria and Acid-base Reactions FAQs
What does Equilibria and Acid-base Reactions cover?
Dynamic equilibrium, Le Chatelier's principle, acids, bases, pH and titrations.
Which practical links here?
Acid-base titration and preparing a standard solution.
Is Kc covered here?
Equilibrium constants are covered in more depth in the A level equilibrium topic.
Revise this topic with flashcards: A Level Chemistry Flashcards, with mark scheme answers for Anki and Quizlet.
