C4.1 Acids, Bases and Salts

1. Mention the advantages of hard water?

2. Which of the following statement is CORRECT WHEN AN ACID REACTS WITH A BASE?

3. The higher the number of hydroxide ions the higher the pH value and the greater the conductivity in the base solution? True or False

4. Water hardness that cannot be removed by boiling is called?

5. All Metal Chloride salts are soluble except Lead (II) ions which are insoluble but in warm water Lead (II) Chloride is soluble. True or False

6. Mention the metal hydroxide which forms a white precipitate when sodium hydroxide is added onto its solution

7. The separation of different salts by making use of the differences in solubility in the same solvent is known as

8. All metal Sulphites are soluble except they react with dilute hydrochloric acid or nitric acid to produce Sulphur (IV) oxide gas. True or Fasle

9. What occurs when hard water is boiled?

10. Describe the chemical equations when the hydroxides of Zinc and Copper (which are precipitates ) react with excess Ammonia solution to form soluble complex ions

11. Water which readily lathers with soap is called

12. A substance that dissociates in water o produce hydroxide as the only negatively charged ions are called?

13. Describe a strong acid in terms of the number of hydrogen ions present and pH value?

14. All metal Sulphates are soluble except Barium and Lead Sulphate which form precipitate. True or False

15. An acid is a substance that dissociates in water to give hydrogen ions as the only positive charged ions. True or False

16. For most salts solubility increases with?

17. Which of the following is not an example of a polar solvent from the below list

18. Mention the benefits of complex ions?

19. Water hardness that is removed by boiling is known as?

20. Explain the reason why Sodium Hydroxide is a strong base than the Ammonia solution and what is its effect on electoral conductivity?

21. A precipitate is an insoluble solid that separates out from a solution during a chemical reaction. True or false

22. A salt is defined as an ionic compound formed when a cation derived from a base combines with an anion from an acid. True or False

23. Hydrochloric acid is a strong acid than Ethanoic acid, what does it mean?

24. When Hydrogen gas dissolves in a non-polar solvent such as Methylbenzene what will occur

25. Aqueous solutions which have a few hydrogen ions are known as?

26. Mention the salts which its solubility decrease with temperature?

27. Describe the chemical equation when the hydroxides of Zinc, Aluminum and Lead hydroxide (which are precipitates) reacts with excess sodium hydroxide or potassium hydroxide to form soluble complex ions?

28. The hydroxides of Zinc and Copper (which are precipitates) react with excess Ammonia solution to form soluble complex ions. True or False

29. Which of the following is not an amphoteric oxide

30. Explain the reason why Hydrochloric acid has a stronger electrical conductivity than ethanoic acid

31. Mention the metal hydroxide which forms a green precipitate when sodium hydroxide is added onto its solution?

32. Sodium, Potassium and Ammonium carbonate salts are soluble the rest are all insoluble and form precipitates. True or False

33. Mention the metal hydroxide which forms a blue precipitate when sodium hydroxide is added onto its solution?

34. Mention the disadvantages of hard water?

35. The hydroxides of Zinc, Aluminum and Lead hydroxide (which are precipitates) react with excess sodium hydroxide or potassium hydroxide to form soluble complex ions. True or False

36. What is the solubility of a solute in a solvent?

37. Which of the following statement describes a polar solvent

38. Metal oxides which react with both as acids and bases to form a colorless solution are known as?

39. When Hydrogen Chloride gas dissolves in a polar solvent such as water what will occur

40. Mention the salts which its solubility remains constant with temperature?

41. When Ammonia gas dissolves in a polar solvent such as water, what will occur?

42. The hydroxides of Magnesium (Mg), Zinc (Zn), Aluminum (Al), Iron (II), Iron (III), Copper (Cu) and Lead (II) ions forms a precipitate. True or False

43. When Ammonia gas dissolves in a non-polar solvent such as Methylbenzene what will occur?

44. Mention the metal hydroxide which forms a brown precipitate when sodium hydroxide is added onto its solution?

45. Water that contains dissolved salts and does not readily lather with soap is called?

46. A molecule which behaves as if it is negatively charged in one end and positively charged in the opposite end is said to be?