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Dilution and Reactions of Acids

8. Dilution and Reactions of Acids. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. answer. 1. Give an everyday example of neutralisation.

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Dilution and Reactions of Acids

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  1. 8 Dilution and Reactions of Acids 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Calderglen High School

  2. answer 1 Give an everyday example of neutralisation. Reducing acidity in soil by adding lime, treatment of acid indigestion Calderglen High School

  3. answer What is Neutralisation? 2 The reaction of an acid with a base to form water Calderglen High School

  4. answer What happens to the pH of an acid as it is neutralised? 3 The pH INCREASES to 7 Calderglen High School

  5. answer Give some examples of neutralisers 4 Alkali (metal hydroxide), metal oxide, metal carbonate Calderglen High School

  6. answer Name the products of the reaction between a dilute acid and an alkali 5 Salt and water Calderglen High School

  7. answer Name the products in the reaction between a dilute acid and a metal carbonate. 6 Salt, water and carbon dioxide Calderglen High School

  8. answer Name the salt produced when dilute hydrochloric acid reacts with copper carbonate 7 Copper chloride Calderglen High School

  9. answer Name the products of the reaction between a dilute acid and a metal oxide 8 Salt and water Calderglen High School

  10. answer Name the products when dilute sulphuric acid reacts with magnesium 9 Magnesium sulphate and hydrogen Calderglen High School

  11. answer What is the formula forhydrochloric acid? 10 HCl Calderglen High School

  12. answer What is the formula forsulphuric acid? 11 H2SO4 Calderglen High School

  13. answer Name the products of the reaction between potassium hydroxide and dilute nitric acid 12 potassium nitrate and water Calderglen High School

  14. answer Which method is used to prepare insoluble salts? 13 precipitation Calderglen High School

  15. answer Name the precipitate formed when barium nitrate solution and sodium sulphate solution react together 14 Barium sulphate Calderglen High School

  16. answer NaOH + HNO3 NaNO3 + H2OIn a titration, 20cm3 of sodium hydroxide was neutralised by 15cm3 of 0.2 mol/l nitric acid. Calculate the concentration of the sodium hydroxide solution. 15 CVH+ (acid) = CVOH- (alkali) 0.2 x15x1 = Cx20x1 3= C x 20 C = 3/20 = 0.15 mol/l Calderglen High School

  17. answer What is a base? 16 A substance which neutralises an acid Calderglen High School

  18. answer Give three examples of a base. 17 alkali (metal hydroxide) metal oxide metal carbonate Calderglen High School

  19. answer Identify the two bases.sodium chloride, sodium oxide, calcium nitrate, copper carbonate 18 sodium oxide and copper carbonate Calderglen High School

  20. answer Name the type of chemical reactiontaking place when copper oxide is added to dilute hydrochloric acid. 19 neutralisation Calderglen High School

  21. answer What is formed when a basedissolves in water? 20 An alkali Calderglen High School

  22. answer AgNO3 (aq) + NaCl (aq) AgCl (s) + NaNO3 (aq)Name thetype of chemical reaction taking place. 21 precipitation Calderglen High School

  23. answer AgNO3 (aq) + NaCl (aq) AgCl (s) + NaNO3 (aq)Name the spectator ions 22 Nitrate NO-3 Sodium Na+ Calderglen High School

  24. 23 answer What happens to thepHof an acid when diluted with water? Itincreases to 7 Calderglen High School

  25. 24 answer What happens to the pH of an ALKALI when diluted with water ? Itdecreasesto7 Calderglen High School

  26. 25 answer What happens to the acidity of an acid when dilutedwith water ? The acidity decreases (less acidic) Calderglen High School

  27. 26 answer What happens to thealkalinityof an alkali when diluted with water? It decreases -becomes less alkaline Calderglen High School

  28. 27 answer What happens to theconcentration of H+ions in an acid when diluted with water? The concentration decreases Calderglen High School

  29. 28 answer What happens to theconcentration of OH-ions in an alkali when diluted with water ? The concentrationdecreases Calderglen High School

  30. answer What is the formula fornitric acid? 29 HNO3 Calderglen High School

  31. answer What could you use to show you have reached the end-point of a neutralisation reaction? 30 Use an indicator Calderglen High School

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