An environmental chemist is investigating how the pH of simulated acid rain (dilute sulfuric acid) changes as it filters through a column of crushed limestone (calcium carbonate).
The chemist uses the following procedure:
Name a piece of equipment that could be used to measure the pH of the runoff more accurately than universal indicator paper.
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.