Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Unit
Inorganic Chemistry
869 practice questions
Topics covered
- The Alkali Metals85 practice questions
- The Halogens86 practice questions
- Gases in the Atmosphere86 practice questions
- Reactivity Series163 practice questions
- Extraction and Uses of Metals128 practice questions
- Acids, Alkalis and Titrations83 practice questions
- Acids, Bases and Salt Preparations156 practice questions
- Chemical Tests68 practice questions
Practice questions
831–840 of 869
Question 831
2 marks · Easy
Answer and see the solution →Explain why hydrochloric acid must not be used instead of nitric acid when testing for halide ions with silver nitrate.
Question 832
3 marks · Easy
Answer and see the solution →The table shows the precipitates formed when different halide ions react with silver nitrate. Ion in solution Observation after adding silver nitrate Cl^- White precipitate Br^- Cream precipitate I^- Yellow precipitate Use the information in the table to answer the following questions.
(a)[1 mark]State the name and colour of the precipitate formed when a solution containing bromide ions is tested with silver nitrate.
(b)[1 mark]Identify which ion produces a yellow precipitate with silver nitrate.
(c)[1 mark]A student obtains a white precipitate when testing their solution with silver nitrate. Which halide ion is present?
Question 833
3 marks · Easy
Answer and see the solution →(a)[1 mark]State the observation when a solution containing iodide ions is tested with silver nitrate.
(b)[1 mark]State the observation when a solution containing chloride ions is tested with silver nitrate.
(c)[1 mark]State the observation when a solution containing bromide ions is tested with silver nitrate.
Question 834
1 mark · Easy
Answer and see the solution →State the reagent that must be added to a solution before silver nitrate to test for chloride, bromide, or iodide ions.
Question 835
2 marks · Easy
Answer and see the solution →A student adds silver nitrate to a solution to test for chloride ions. Before adding the silver nitrate, they add hydrochloric acid by mistake instead of another reagent. Explain, using your knowledge of chemical tests, why this mistake could affect the test result.
Question 836
2 marks · Normal
Answer and see the solution →Describe the steps you would take to test a solution for the presence of chloride, bromide, and iodide ions using silver nitrate.
Question 837
4 marks · Normal
Answer and see the solution →(a)[1 mark]State the expected observation if chloride ions are present when silver nitrate solution is added after acidifying.
(b)[1 mark]State the expected observation if bromide ions are present when silver nitrate solution is added after acidifying.
(c)[1 mark]State the expected observation if iodide ions are present when silver nitrate solution is added after acidifying.
(d)[1 mark]A student tested a solution using dilute nitric acid and silver nitrate. The result was a cream precipitate. Which ion is present?
Question 838
3 marks · Normal
Answer and see the solution →Explain how you can distinguish between the precipitates formed when chloride, bromide or iodide ions react with silver nitrate. In your answer, refer to both the name and the colour of each precipitate.
Question 839
4 marks · Normal
Answer and see the solution →The table shows the results of silver nitrate tests on four unknown solutions after they were all acidified with dilute nitric acid.
Solution Observation with AgNO3 after acidifying P White precipitate Q Yellow precipitate R No precipitate S Cream precipitate For each solution, write the name and formula of the ion responsible for the observation. If there is no precipitate, state 'none'.
Question 840
1 mark · Normal
Answer and check →A solution is acidified with dilute nitric acid and then tested with silver nitrate. Which observation indicates the presence of bromide ions?
- A.A yellow precipitate forms.
- B.A white precipitate forms.
- C.A cream precipitate forms.
- D.No precipitate forms.