This question is about identifying ions and performing calculations with solutions.
Which two methods can be used to identify the presence of potassium ions in a solution?
Sodium hydroxide solution is used to test for some metal ions. Sodium hydroxide solution is added to a solution of iron(III) chloride 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.
Sulfate ions can be identified using dilute hydrochloric acid and _______________.
A solution of iron(III) chloride has a concentration of 192 g/dm3.
Calculate the mass of iron(III) chloride needed to make 650 cm3 of a solution with a concentration of 192 g/dm3.
Give your answer to 3 significant figures.