Testing for Ions quiz Loading... 1. How are calcium ions identified, and what is the result?Using sodium hydroxide. Precipitate is blueUsing a flame test. Flame colour is yellowUsing sodium hydroxide. Precipitate is greenUsing a flame test. Flame colour is orange- redQuestion 1 of 10 Loading... 2. In a flame test, why is hydrochloric acid used?To clean the wire of any unwanted ionsTo dissolve insoluble saltsTo make the colour of the flame more obviousTo protect the wire from meltingQuestion 2 of 10 Loading... 3. Describe how you would test for sulfate ions (SO₄²⁻) and what is the result if they are present?Add dilute HCl, followed by silver nitrate (AgNO₃) and see if a white precipitate formsFlame test. Flame colour is lilacAdd dilute HCl, followed by barium chloride (BaCl₂) and see if a white precipitate formsAdd nitric acid and see if carbon dioxide bubbles formQuestion 3 of 10 Loading... 4. What is the test for NH₄⁺ ions and what is the result?Gently heat. The gas (ammonia) bleaches damp red litmus paperAdd NaOH. The gas (ammonia) turns damp red litmus paper blue.Add NaOH. The gas (ammonia) bleaches damp red litmus paperAdd silver nitrate, and a white precipitate formsQuestion 4 of 10 Loading... 5. How are lithium ions identified, and what is the result?Using sodium hydroxide. Precipitate is blueUsing a flame test. Flame colour is redUsing sodium hydroxide. Precipitate is greenUsing a flame test. Flame colour is greenQuestion 5 of 10 Loading... 6. How would you test for the ammonium ion (NH₄⁺)?Add sodium hydroxide. If ammonium ions were present, ammonia gas will form which will bleach damp red litmus paperGently heat it. If ammonium ions were present, ammonia gas will be given off which will bleach damp red litmus paperAdd sodium hydroxide. If ammonium ions were present, ammonia gas will form which will turn damp red litmus paper blueGently heat it. If ammonium ions were present, ammonia gas will be given off which will turn damp red litmus paper blueQuestion 6 of 10 Loading... 7. When testing a sample of potassium chloride, nitric acid and then silver nitrate is added. Describe the result, and name the substance formed.A cream precipitate of silver bromideA yellow precipitate of silver iodideA white precipitate of silver sulfateA white precipitate of silver chlorideQuestion 7 of 10 Loading... 8. Which two substances are added when testing for the sulfate (SO₄²⁻) ions? (2)Dilute HCl, followed by silver nitrate (AgNO₃)Dilute HNO₃, followed by barium chloride (BaCl₂)Dilute HNO₃, followed by silver nitrate (AgNO₃)Dilute HCl, followed by barium chloride (BaCl₂)Question 8 of 10 Loading... 9. Give the name of the brown precipitate formed when sodium hydroxide is added to a solution containing Fe³⁺iron (III) hydroxideiron (II) hydroxideiron (III) oxideiron (II) oxideQuestion 9 of 10 Loading... 10. In a flame test, a blue-green colour is seen. Give the formula of the cation which is present.Li⁺Ca²⁺Cu²⁺K⁺Question 10 of 10 Loading... Related Posts:The entire quiz question bank!The entire quiz question bank (Double only)!Key Calculations quizEquilibria (triple) quizCondensation Polymers quizElectrolysis quiz Hydr0Gen2020-03-01T15:25:48+00:00Categories: Uncategorized|Tags: Quiz, Topic: Acids & Salts| Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail
