This question is about identifying ions and performing calculations with solutions.
Which two methods can be used to identify the presence of sodium ions in a solution?
Sodium hydroxide solution is used to test for some metal ions. Sodium hydroxide solution is added to a solution of copper(II) sulfate until a precipitate forms.
Complete the sentence by choosing from: blue, brown, green, or white.
The colour of the precipitate formed is _______________.
Complete the sentence by choosing from: barium chloride solution, limewater, red litmus paper, or silver nitrate solution.
Chloride ions can be identified using dilute nitric acid and _______________.
A solution of copper(II) sulfate has a concentration of 237 g/dm3.
Calculate the mass of copper(II) sulfate needed to make 600 cm3 of a solution with a concentration of 237 g/dm3.
Give your answer to 3 significant figures.
29 exam-style questions on AQA GCSE Chemistry 8.3 Identification of ions by chemical and spectroscopic means, covering 8.3.1 Flame tests, 8.3.2 Metal hydroxides, 8.3.3 Carbonates, 8.3.4 Halides, 8.3.5 Sulfates, 8.3.6 Instrumental methods, and 8.3.7 Flame emission spectroscopy. Each one has a worked solution and a mark scheme showing where the marks go.