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
301–310 of 359 · Easy
Question 301
2 marks · Easy
Answer and see the solution →A student wants to prepare ammonium sulfate by titrating ammonium hydroxide ( ) with sulfuric acid ( ).
Write the balanced chemical equation for this reaction.
Question 302
1 mark · Easy
Answer and see the solution →State why you cannot use the 'add excess solid, then filter' method to prepare sodium salts from acid and sodium hydroxide.
Question 303
3 marks · Easy
Answer and see the solution →A student prepares pure potassium sulfate crystals from potassium hydroxide and sulfuric acid using titration.
(a)[1 mark]State the purpose of using an indicator during the titration.
(b)[2 marks]After finding the correct volumes, outline two steps the student must take to obtain pure potassium sulfate crystals.
Question 304
2 marks · Easy
Answer and see the solution →Write the balanced chemical equation for the preparation of sodium sulfate by titrating sodium hydroxide and sulfuric acid. State the number of moles of sodium hydroxide needed to react completely with 1 mole of sulfuric acid.
Question 305
1 mark · Easy
Answer and see the solution →State the name of the insoluble salt formed when solutions of barium nitrate and potassium sulfate are mixed.
Question 306
3 marks · Easy
Answer and see the solution →A student wants to prepare a sample of insoluble silver iodide by mixing solutions of two soluble salts.
(a)[2 marks]Name a suitable silver salt solution and a suitable iodide salt solution the student could use.
(b)[1 mark]State the colour of the precipitate formed.
Question 307
2 marks · Easy
Answer and see the solution →Write a balanced ionic equation, including state symbols, for the formation of calcium carbonate as a precipitate from aqueous solutions.
Question 308
2 marks · Easy
Answer and see the solution →In the reaction between zinc nitrate solution and sodium carbonate solution, a precipitate forms.
Explain which ions are the spectator ions in this reaction.
Question 309
3 marks · Easy
Answer and see the solution →A student mixes different pairs of solutions and records whether a precipitate forms. The results are shown in the table below.
Solution 1 Solution 2 Observation Magnesium sulfate Sodium carbonate White precipitate Potassium chloride Sodium nitrate No precipitate Calcium nitrate Sodium sulfate White precipitate Use the table to answer the questions.
(a)[1 mark]Which pair of solutions does NOT produce an insoluble salt?
(b)[1 mark]Name one insoluble salt formed in these reactions.
(c)[1 mark]Give a reason why no precipitate forms when potassium chloride and sodium nitrate are mixed.
Question 310
1 mark · Easy
Answer and see the solution →Complete the ionic equation for the formation of silver chloride: Ag^+(aq) + ___(aq) → AgCl(s)