An industrial accident at a wastewater treatment facility resulted in the runoff of aluminium sulfate into a local stream.
Describe a test to show that the stream water contains aluminium ions.
Give the result of the test.
Describe a test to show that the stream water contains sulfate ions.
Give the result of the test.
Plan an investigation to find the total mass of dissolved solids in a 200 cm3 sample of the stream water.
Your investigation should produce valid results.