Testing for Ions quiz Loading... 1. 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 formsAdd nitric acid and see if carbon dioxide bubbles formFlame test. Flame colour is lilacAdd dilute HCl, followed by barium chloride (BaCl₂) and see if a white precipitate formsQuestion 1 of 10 Loading... 2. In a flame test, a lilac colour is seen. Give the formula of the cation which is present.Na⁺Cu²⁺Li⁺K⁺Question 2 of 10 Loading... 3. How are lithium ions identified, and what is the result?Using sodium hydroxide. Precipitate is greenUsing sodium hydroxide. Precipitate is blueUsing a flame test. Flame colour is redUsing a flame test. Flame colour is greenQuestion 3 of 10 Loading... 4. When testing for halide or sulfate ions, why is acid added added first?To act as a catalystTo dissolve insoluble saltsTo remove any carbonate ionsTo increase the rate of reactionQuestion 4 of 10 Loading... 5. Write an chemical equation for the reaction between barium chloride and lithium sulfate (Li₂SO₄). Include state symbols. Also, what would you see?BaCl₂ (aq) + Li₂SO₄ (aq) → BaSO₄ (s)+ 2LiCl (aq). Observe a white precipitate of barium sulfate.BaCl₂ (aq) + Li₂SO₄ (aq) → BaSO₄ (s)+ LiCl₂ (aq). Observe a white precipitate of barium sulfate.BaCl₂ (aq) + Li₂SO₄ (aq) → BaSO₄ (aq)+ 2LiCl (s). Observe a white precipitate of lithium chloride.BaCl₂ (aq) + Li₂SO₄ (aq) → BaSO₄ (aq)+ Li₂Cl (s). Observe a white precipitate of lithium chloride.Question 5 of 10 Loading... 6. In a flame test, why is hydrochloric acid used?To make the colour of the flame more obviousTo dissolve insoluble saltsTo clean the wire of any unwanted ionsTo protect the wire from meltingQuestion 6 of 10 Loading... 7. How are potassium ions identified, and what is the result?Using sodium hydroxide. Precipitate is blueUsing a flame test. Flame colour is lilacUsing sodium hydroxide. Precipitate is greenUsing a flame test. Flame colour is redQuestion 7 of 10 Loading... 8. When NaOH is added to a sample, a brown precipitate forms. What cation was present in the sample?Iron (III), Fe³⁺Potassium (I), K⁺Calcium (II), Ca²⁺Iron (II), Fe²⁺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 (II) hydroxideiron (III) hydroxideiron (II) oxideiron (III) oxideQuestion 9 of 10 Loading... 10. What is the test for copper (II) ions (Cu²⁺) and what is the result?Flame test. Flame colour is lilacFlame test. Flame colour is redAdd NaOH. A green precipitate forms.Add NaOH. A blue precipitate forms.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