1. Describe how you would test for sulfate ions (SO₄²⁻) and what is the result if they are present?

Question 1 of 10

2. In a flame test, a lilac colour is seen. Give the formula of the cation which is present.

Question 2 of 10

3. How are lithium ions identified, and what is the result?

Question 3 of 10

4. When testing for halide or sulfate ions, why is acid added added first?

Question 4 of 10

5. Write an chemical equation for the reaction between barium chloride and lithium sulfate (Li₂SO₄). Include state symbols. Also, what would you see?

Question 5 of 10

6. In a flame test, why is hydrochloric acid used?

Question 6 of 10

7. How are potassium ions identified, and what is the result?

Question 7 of 10

8. When NaOH is added to a sample, a brown precipitate forms. What cation was present in the sample?

Question 8 of 10

9. Give the name of the brown precipitate formed when sodium hydroxide is added to a solution containing Fe³⁺

Question 9 of 10

10. What is the test for copper (II) ions (Cu²⁺) and what is the result?

Question 10 of 10


 

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