Carbon dioxide gas and sulfur trioxide gas are dissolved in separate test tubes of distilled water. A piece of blue litmus paper is then dipped into each test tube. State and explain the colour change you would observe in both test tubes.
Practise Edexcel GCSE Chemistry Acids with exam-style questions for Foundation and Higher tier. 100 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.