Acids & Salts (Triple) quiz Loading... 1. Describe the test for ammonia gasBurns with a squeaky popRelights a glowing splintTurns damp red litmus paper blueTurns limewater cloudyQuestion 1 of 21 Loading... 2. When preparing hydrated copper(II) sulfate crystals starting from copper(II) oxide, why is an excess of copper (II) oxide added?To ensure all the acid has reacted so there is no acid leftTo increase the rate of reactionTo prevent the acid from evaporatingTo ensure there is enough solid left for the impurities to be filtered outQuestion 2 of 21 Loading... 3. What is defined as a proton donor?An acidA baseAn oreAn alkaliQuestion 3 of 21 Loading... 4. Describe the method to prepare a pure dry sample of copper sulfate (soluble salt) 1) Heat acid in a beaker. 2) Add an equal amount of base and stir with glass rod. 3) Filter the mixture using filter paper and funnel. 4) Heat the filtered solution (filtrate) until a hot saturated solution forms. 5) Allow the solution to cool so that hydrated crystals form. 6) Remove the crystals by filtration and wash with distilled water. 7) Dry by leaving in a warm place.1) Heat acid in a beaker. 2) Add base until excess and stir with glass rod. 3) Filter the mixture using filter paper and funnel. 4) Heat the filtered solution (filtrate) until a hot saturated solution forms. 5) Filter and wash with distilled water. 7) Dry by leaving in a warm place.1) Heat acid in a beaker. 2) Add base until excess and stir with glass rod. 3) Filter the mixture using filter paper and funnel. 4) Heat the filtered solution (filtrate) until a hot saturated solution forms. 5) Allow the solution to cool so that hydrated crystals form. 6) Remove the crystals by filtration and wash with distilled water. 7) Dry by leaving in a warm place.1) Heat acid in a beaker. 2) Add an equal amount of base and stir with glass rod. 3) Filter the mixture using filter paper and funnel. 4) Heat the filtered solution (filtrate) until a hot saturated solution forms. 5) Filter and wash with distilled water. 7) Dry by leaving in a warm place.Question 4 of 21 Loading... 5. A pure, dry sample of a soluble salt can be prepared starting from an acid and alkali. What are the two stages of this method called?Titration then crystallisationNeutralisation then precipitationCombustion then crystallisationNeutralisation then filtrationQuestion 5 of 21 Loading... 6. Is sodium hydroxide soluble?noslightlyyesQuestion 6 of 21 Loading... 7. When testing a sample for ions, hydrochloric acid and then barium chloride are added to a sample. A white precipitate forms. What is the name of that precipitate?barium bromidebarium sulfatebarium chloridebarium carbonateQuestion 7 of 21 Loading... 8. What is the universal indicator colour of a pH 0-3 solution?YellowGreenRedPurpleQuestion 8 of 21 Loading... 9. If sulfuric acid (H₂SO₄) produces 2H⁺, what must the other ion be?SO₄²⁻ (sulfate ion)S²⁻ (sulfide ion)O²⁻ (oxide ion)S²⁺ (sulfide ion)Question 9 of 21 Loading... 10. What method would be followed to prepare a sample of pure, dry lead (II) sulfate?Excess solid methodPrecipitation methodCombustion methodTitration methodQuestion 10 of 21 Loading... 11. acid + base →acid + base → salt + water + carbon dioxideacid + base → salt + wateracid + base → salt + hydrogen + oxygenacid + base → salt + hydrogenQuestion 11 of 21 Loading... 12. Is ammonia acidic or basic?BasicAcidicDepends on the conditionsNeutralQuestion 12 of 21 Loading... 13. An alkali is called a proton _________An alkali is a proton sinkAn alkali is a proton solventAn alkali is a proton donorAn alkali is a proton acceptorQuestion 13 of 21 Loading... 14. What is the pH of a weak alkali?12-144-78-100-3Question 14 of 21 Loading... 15. What is the empirical formula of a compound in which 0.48 g of carbon combines with 0.08 g of hydrogen and 0.64 g of oxygen?CH₂OCH₄OC₂H₄O₂C₄H₂OQuestion 15 of 21 Loading... 16. When NaOH is added to a sample, a brown precipitate forms. What cation was present in the sample?Iron (III), Fe³⁺Iron (II), Fe²⁺Calcium (II), Ca²⁺Potassium (I), K⁺Question 16 of 21 Loading... 17. In a flame test, why is hydrochloric acid used?To make the colour of the flame more obviousTo clean the wire of any unwanted ionsTo dissolve insoluble saltsTo protect the wire from meltingQuestion 17 of 21 Loading... 18. Can a base neutralise an acid?YesSometimesOnly if it is more reactive than hydrogenNoQuestion 18 of 21 Loading... 19. How are sodium ions identified, and what is the result?Using a flame test. Flame colour is yellowUsing sodium hydroxide. Precipitate is blueUsing sodium hydroxide. Precipitate is greenUsing a flame test. Flame colour is redQuestion 19 of 21 Loading... 20. What is an acid?An acid is a corrosive substanceAn acid is a source of hydrogen ions, H⁺An acid is a compound that reacts with metalsAn acid is a green solutionQuestion 20 of 21 Loading... 21. Describe an experiment to prepare a pure, dry sample of an insoluble salt, starting from two soluble reactants1) Mix the two salt solutions together in a beaker. 2) Stir with glass rod. 3) Pour away the liquid 4) Wash with distilled water. 5) Dry by leaving in a warm place.1) Mix the two salt solutions together in a beaker. 2) Stir with glass rod. 3) Filter using filter paper and funnel. 4) Wash with distilled water. 5) Dry by leaving in a warm place.1) Mix the two salt solutions together in a beaker. 2) Stir with glass rod. 3) Pour away the liquid 4) Wash with one of the original solutions. 5) Dry by leaving in a warm place.1) Mix the two salt solutions together in a beaker. 2) Stir with glass rod. 3) Filter using filter paper and funnel 4) Wash with one of the original solutions. 5) Dry by leaving in a warm place.Question 21 of 21 Loading... Related Posts:The entire quiz question bank!The entire quiz question bank (Double only)!Key Calculations quizEquilibria (triple) quizCondensation Polymers quizElectrolysis quiz Hydr0Gen2020-02-16T17:11:05+00:00Categories: Uncategorized|Tags: Quiz, Topic: Acids & Salts| Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail