Testing for Ions quiz Loading... 1. What is the test for iron (III) ions (Fe³⁺) and what is the result?Add NaOH. A green precipitate forms.Flame test. Flame colour is redAdd NaOH. A brown precipitate forms.Flame test. Flame colour is lilacQuestion 1 of 10 Loading... 2. In a flame test, a yellow colour is seen. Give the formula of the cation which is present.Li⁺Na⁺K⁺Ca²⁺Question 2 of 10 Loading... 3. Which two substances are added when testing for halide ions, and what is the result if they are present?Dilute nitric acid and silver nitrate. A precipitate formsDilute hydrochloric acid and barium chloride. A precipitate formsDilute hydrochloric acid and barium chloride. A gas is given offDilute nitric acid and silver nitrate. A gas is given offQuestion 3 of 10 Loading... 4. In a flame test, why is hydrochloric acid used?To protect the wire from meltingTo make the colour of the flame more obviousTo dissolve insoluble saltsTo clean the wire of any unwanted ionsQuestion 4 of 10 Loading... 5. How would you test for the ammonium ion (NH₄⁺)?Gently heat it. If ammonium ions were present, ammonia gas will be given off which will turn damp red litmus paper blueGently 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 bleach damp red litmus paperAdd sodium hydroxide. If ammonium ions were present, ammonia gas will form which will turn damp red litmus paper blueQuestion 5 of 10 Loading... 6. Give the name of the green precipitate formed when sodium hydroxide is added to a solution containing Fe²⁺iron (III) oxideiron (II) hydroxideiron (III) hydroxideiron (II) oxideQuestion 6 of 10 Loading... 7. When testing a sample of lithium bromide, nitric acid and then silver nitrate is added. Describe the result, and name the substance formed.A white precipitate of silver sulfateA yellow precipitate of silver iodideA white precipitate of silver chlorideA cream precipitate of silver bromideQuestion 7 of 10 Loading... 8. In a flame test, a orange-red colour is seen. Give the formula of the cation which is present.K⁺Li⁺Na⁺Ca²⁺Question 8 of 10 Loading... 9. How are calcium ions identified, and what is the result?Using a flame test. Flame colour is orange- redUsing sodium hydroxide. Precipitate is blueUsing sodium hydroxide. Precipitate is greenUsing a flame test. Flame colour is yellowQuestion 9 of 10 Loading... 10. 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 nitric acid and see if carbon dioxide bubbles formAdd dilute HCl, followed by barium chloride (BaCl₂) and see if a white precipitate formsQuestion 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
