Every Chemistry IAL past paper in the collection that assesses acid-base equilibria.
By unit: all units (37) · Unit 4 (31) · Unit 6 (6)
Unit 4: on 31 of 31 papers, 8–26 marks a paper (18 on average)
Unit 6: on 6 of 29 papers, 1–5 marks a paper (3 on average)
Read question by question: blind checks found 112 of 120 question parts tagged with the right topic (95% confidence interval 87.4–96.6%). “needs (a)” names an earlier part the listed parts build on, so a question can be worked through whole.
Unit 4 · October 2024 · Q4 · 1 mark, Q5 · 1 mark, Q6 · 1 mark, Q7 · 1 mark, Q8 · 1 mark, Q17 (a, b(i), b(ii), b(iii)) · 14 marks — question paper and mark scheme
Unit 4 · June 2024 · Q6 · 1 mark, Q7 · 1 mark, Q19 (a(i), a(ii), a(iii), a(iv), b, c) · 19 marks — question paper and mark scheme
Unit 4 · January 2024 · Q7 · 1 mark, Q8 · 1 mark, Q9 · 1 mark, Q10 · 1 mark, Q19 (b(i), b(ii), b(iii), c(i), c(ii), c(iii)) · 12 marks — question paper and mark scheme
Unit 4 · October 2023 · Q7 · 1 mark, Q8 · 1 mark, Q9 · 1 mark, Q18 (a(i), a(ii), a(iii), a(iv), a(v), b, c(i), c(ii)) · 18 marks — question paper and mark scheme
Unit 4 · June 2023 · Q13 (a, b) · 2 marks, Q14 (a) · 1 mark, Q15 · 1 mark, Q16 · 1 mark, Q22 (b(i), b(ii), b(iii), c, d(i), d(ii), d(iii)) · 17 marks — question paper and mark scheme
Unit 4 · January 2023 · Q10 · 1 mark, Q11 · 1 mark, Q12 (a, b) · 2 marks, Q21 (a(i), a(ii), b(i), b(ii), c(i), c(ii)) · 19 marks — question paper and mark scheme
Unit 4 · October 2022 · Q7 · 1 mark, Q8 · 1 mark, Q9 · 1 mark, Q10 · 1 mark, Q15 (d(i), d(ii), d(iii)) · 7 marks — question paper and mark scheme
Unit 4 · June 2022 · Q7 · 1 mark, Q8 · 1 mark, Q9 (a, b) · 2 marks, Q11 (b) · 1 mark, Q16 (c) · 1 mark, Q19 (a(i), a(ii), a(iii), b) · 8 marks — question paper and mark scheme
Unit 4 · January 2022 · Q5 · 1 mark, Q6 · 1 mark, Q12 (b) · 1 mark, Q19 (a(ii)) · 2 marks, Q20 (a(i), a(ii)) · 5 marks, Q22 (e(i), e(ii), e(iii)) · 6 marks — question paper and mark scheme
Unit 4 · October 2021 · Q8 · 1 mark, Q9 · 1 mark, Q20 (a(i), a(ii), a(iii), b(i), b(ii), b(iii), c) · 20 marks — question paper and mark scheme
Unit 4 · June 2021 · Q4 (a, b, c) · 3 marks, Q19 (c(i), c(ii)) · 6 marks — question paper and mark scheme
Unit 4 · January 2021 · Q9 (a, b) · 2 marks, Q10 (a, b, c) · 3 marks, Q18 (b(ii), b(iii), c(i), c(ii)) · 10 marks — question paper and mark scheme
Unit 4 · October 2020 · Q8 · 1 mark, Q9 (a, b, c) · 3 marks, Q18 (a(i), a(ii), b(i), b(ii), c(i), c(ii), d) · 18 marks — question paper and mark scheme
Unit 4 · October 2020 · Q5 (a, b, c) · 3 marks, Q6 · 1 mark, Q14 (a(i), a(ii), b(i), b(ii)) · 11 marks, Q17 (b(i), d) · 4 marks — question paper and mark scheme
Unit 4 · January 2015 · Q10 · 1 mark, Q11 · 1 mark, Q12 · 1 mark, Q23 (a(i), a(ii), a(iii), b(i), b(ii), b(iii), c) · 17 marks — question paper and mark scheme
Unit 4 · June 2014 · Q16 · 1 mark, Q17 · 1 mark, Q22 (a(i), a(ii), a(iii), a(iv), b(i), b(ii), b(iii), b(iv), b(v), c) · 21 marks — question paper and mark scheme
Unit 4 · January 2014 · Q10 · 1 mark, Q11 · 1 mark, Q18 (a(i), a(ii), b(i), b(ii), b(iii)) · 12 marks — question paper and mark scheme