An environmental chemist is analyzing a sample of runoff water from an active mine to confirm the presence of dissolved sulfate ions (SO42−\text{SO}_4^{2-}SO42−).
Describe the chemical test the chemist should perform to show that the sample contains sulfate ions, including the observation for a positive result.
Practise Edexcel GCSE Chemistry Qualitative analysis: tests for ions with exam-style questions for Foundation and Higher tier. 127 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
