A student carries out a qualitative test for sulfate ions (SO42−\text{SO}_4^{2-}SO42−) by adding dilute hydrochloric acid followed by barium chloride solution to an aqueous sample of sodium sulfate.
Describe the visual change that would be observed during this test.
Practise Edexcel GCSE Chemistry Qualitative analysis: tests for ions with exam-style questions for Foundation and Higher tier. 150 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.
