A wax candle is produced from a blend of hydrocarbons. The candle is then ignited and put inside a gas jar together with a strip of cobalt(II) chloride test paper, as shown. Soon afterwards, the oxygen in the jar is exhausted and the candle flame extinguishes. Which substance is detected by the cobalt(II) chloride paper?
- Acarbon dioxide
- Bcarbon monoxide
- Csulfur dioxide
- Dwater