1. When testing a sample for ions, hydrochloric acid and then barium chloride are added to a sample. A white precipitate forms. What ions have been shown to be present?

Question 1 of 10

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

Question 2 of 10

3. In a flame test, a blue-green colour is seen. Give the formula of the cation which is present.

Question 3 of 10

4. How are sodium ions identified, and what is the result?

Question 4 of 10

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

Question 5 of 10

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

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 would you test for the ammonium ion (NH₄⁺)?

Question 8 of 10

9. When testing a sample for ions, hydrochloric acid and then barium chloride are added to a sample. A white precipitate forms. What is the name of that precipitate?

Question 9 of 10

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

Question 10 of 10


 

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