An excess of dilute nitric acid is added to a test tube containing solid sodium carbonate. A gaseous product is evolved and collected. Which test and observation would confirm the identity of this gas?
It relights a glowing wooden splint, confirming the gas is oxygen.
It burns with a squeaky pop when exposed to a lighted splint, confirming the gas is hydrogen.
It produces a white precipitate when bubbled through limewater, confirming the gas is carbon dioxide.
It turns damp red litmus paper blue, confirming the gas is ammonia.
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.