1. When testing a sample for ions, nitric acid is added to a sample and then bubbles are seen. What ions have been shown to be present?

Question 1 of 10

2. What 2 things are added to a solution to test for chloride ions? What is observed if they are present?

Question 2 of 10

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

Question 3 of 10

4. When NaOH is added to a sample, the resultant gas turns damp red litmus paper blue. What cation was present in the sample?

Question 4 of 10

5. In the flame test for copper (II) ions what colour is the result?

Question 5 of 10

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

Question 6 of 10

7. How are potassium ions identified, 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. Which two substances are added when testing for halide ions, and what is the result if they are present?

Question 9 of 10

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

Question 10 of 10


 

Related Posts: