An industrial chemist is comparing the relative acidic strength of three different acidic wastewater samples from a manufacturing plant. They use a digital pH meter to measure the exact pH of each sample.
Explain why blue litmus paper would not be suitable to compare the acidic strength of these wastewater samples.
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.
