When magnesium ribbon is added to a test tube containing dilute hydrochloric acid, rapid effervescence is observed and a colourless gas is produced.
Describe the test to confirm that this gas is hydrogen.
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.