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

Question 1 of 10

2. Give the name of the blue precipitate formed when sodium hydroxide is added to a solution containing Cu²⁺

Question 2 of 10

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

Question 3 of 10

4. In a flame test, a orange-red colour is seen. Give the formula of the cation which is present.

Question 4 of 10

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

Question 5 of 10

6. Nitric acid and silver nitrate are added to a solution containing chloride ions. Describe the result.

Question 6 of 10

7. What is the test for iron (III) ions (Fe³⁺) and what is the result?

Question 7 of 10

8. How are calcium ions identified, and what is the result?

Question 8 of 10

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

Question 9 of 10

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

Question 10 of 10


 

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