A student is comparing the acidity of three different fruit juices: lemon juice, orange juice, and tomato juice. They use universal indicator paper to estimate the pH of each juice.
Explain why blue litmus paper would not be suitable to compare the acidic strength of these fruit juices.
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.
