A student is preparing crystals of zinc sulfate. They add small amounts of zinc carbonate, a white powder, to a beaker containing warm, dilute sulfuric acid and stir the mixture.
Explain how the student knows when they have added enough zinc carbonate to neutralise all the acid.
Practise Edexcel GCSE Chemistry Acids with exam-style questions for Foundation and Higher tier. 276 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.