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Preparation of salts past paper questions

O Level Chemistry 5070 · Acids, bases and salts. 1 Describe the preparation, separation and purification of soluble salts by reaction of an acid with: (a) an alkali by titration (b) excess metal (c) excess insoluble base (d) excess insoluble carbonate 2 Describe the preparation of insoluble salts by precipitation 3 Describe the general solubility rule for salts: (a) sodium, potassium and ammonium salts are soluble (b) nitrates are soluble (c) chlorides are soluble, except lead and silver (d) sulfates are soluble, except barium, calcium and lead (e) carbonates are insoluble, except sodium, potassium and ammonium (f) hydroxides are insoluble, except sodium, potassium, ammonium and calcium (partially) 4 Define a hydrated substance as a substance that is chemically combined with water and an anhydrous substance as a substance containing no water 5 Define the term water of crystallisation as the water molecules present in hydrated crystals,

In Cambridge O Level Chemistry 5070, Preparation of salts came up in 47 of the 72 papers on Paperstreak, for about 3 marks a paper when it does. It last came up in October/November 2025.

Often set with Identification of ions and gases, Formulae, Redox, The mole and the Avogadro constant.

63 questions, newest first

  1. 5070/11/O/N/25 Question 19 · 1 mark
  2. 5070/12/O/N/25 Question 20 · 1 mark
  3. 5070/21/O/N/25 Question 9 part (a) · 1 mark
  4. 5070/22/O/N/25 Question 9 part (a) · 1 mark
  5. 5070/12/M/J/25 Question 39 · 1 mark
  6. 5070/21/M/J/25 Question 1 part (a) · 1 mark
  7. 5070/22/M/J/25 Question 1 part (a) · 1 mark
  8. 5070/42/M/J/25 Question 4 · 6 marks
  9. 5070/11/O/N/24 Question 21 · 1 mark
  10. 5070/11/O/N/24 Question 22 · 1 mark
  11. 5070/12/O/N/24 Question 24 · 1 mark
  12. 5070/21/O/N/24 Question 5 part (e) · 3 marks
  13. 5070/42/O/N/24 Question 1 part (a) · 1 mark
  14. 5070/11/M/J/24 Question 25 · 1 mark
  15. 5070/12/M/J/24 Question 23 · 1 mark
  16. 5070/12/M/J/24 Question 24 · 1 mark
  17. 5070/11/O/N/23 Question 22 · 1 mark
  18. 5070/12/O/N/23 Question 6 · 1 mark
  19. 5070/12/O/N/23 Question 21 · 1 mark
  20. 5070/12/O/N/23 Question 22 · 1 mark
  21. 5070/21/O/N/23 Question 6 part (c(ii)) · 1 mark
  22. 5070/41/O/N/23 Question 4 · 6 marks
  23. 5070/42/O/N/23 Question 4 · 6 marks
  24. 5070/12/M/J/23 Question 24 · 1 mark
  25. 5070/21/M/J/23 Question 3 parts (a(ii)) (b) (c(i)) (c(ii)) · 4 marks
  26. 5070/22/M/J/23 Question 3 parts (b) (c) · 2 marks
  27. 5070/11/O/N/22 Question 29 · 1 mark
  28. 5070/12/O/N/22 Question 29 · 1 mark
  29. 5070/12/O/N/22 Question 30 · 1 mark
  30. 5070/21/O/N/22 Question 8 part (d) · 1 mark
  31. 5070/22/O/N/22 Question 8 part (e(i)) · 1 mark
  32. 5070/11/M/J/22 Question 27 · 1 mark
  33. 5070/11/M/J/22 Question 28 · 1 mark
  34. 5070/12/M/J/22 Question 27 · 1 mark
  35. 5070/12/M/J/22 Question 28 · 1 mark
  36. 5070/21/M/J/22 Question 1 part (d) · 1 mark
  37. 5070/21/M/J/22 Question 9 part (b(i)) · 1 mark
  38. 5070/22/M/J/22 Question 1 parts (b) (d) · 2 marks
  39. 5070/22/M/J/22 Question 6 part (c) · 2 marks
  40. 5070/22/M/J/22 Question 10 part (b(i)) · 1 mark
  41. 5070/11/O/N/21 Question 23 · 1 mark
  42. 5070/12/O/N/21 Question 23 · 1 mark
  43. 5070/12/O/N/21 Question 24 · 1 mark
  44. 5070/22/O/N/21 Question 1 part (c) · 1 mark
  45. 5070/41/O/N/21 Question 6 parts (b) (c) (d(i)) (d(ii)) (e(i)) · 7 marks
  46. 5070/11/M/J/21 Question 24 · 1 mark
  47. 5070/12/M/J/21 Question 23 · 1 mark
  48. 5070/21/M/J/21 Question 8 part (d) · 1 mark
  49. 5070/22/M/J/21 Question 4 part (d(i)) · 1 mark
  50. 5070/22/M/J/21 Question 8 parts (d) (e) · 3 marks
  51. 5070/41/M/J/21 Question 1 part (b) · 2 marks
  52. 5070/42/M/J/21 Question 1 parts (a(ii)) (b(i)) (b(ii)) (b(iii)) (b(iv)) (b(v)) (c(i)) (c(iii)) · 9 marks
  53. 5070/42/M/J/21 Question 3 parts (e(i)) (e(ii)) · 4 marks
  54. 5070/11/O/N/20 Question 23 · 1 mark
  55. 5070/11/O/N/20 Question 24 · 1 mark
  56. 5070/12/O/N/20 Question 23 · 1 mark
  57. 5070/12/O/N/20 Question 24 · 1 mark
  58. 5070/21/O/N/20 Question 9 part (e) · 1 mark
  59. 5070/22/O/N/20 Question 9 part (d) · 1 mark
  60. 5070/21/M/J/20 Question 8 parts (b(i)) (b(ii)) · 4 marks
  61. 5070/22/M/J/20 Question 1 part (c) · 1 mark
  62. 5070/22/M/J/20 Question 7 part (b) · 4 marks
  63. 5070/42/M/J/20 Question 4 parts (b) (d) (e) · 7 marks

More in Acids, bases and salts: The characteristic properties of acids and bases, Oxides.

Questions and mark schemes from Cambridge International past papers. Paperstreak isn't affiliated with Cambridge.