An analytical chemist is testing a sample of acidic mine drainage suspected of containing iron(III) ions, Fe3+\text{Fe}^{3+}Fe3+. They add a few drops of sodium hydroxide solution to a portion of the sample, resulting in the formation of iron(III) hydroxide.
State what would be seen.
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.
