When air is successively passed through sodium hydroxide solution, alkaline pyrogallol and then concentrated tetraoxosulphate...
CHEMISTRY
WAEC 2007
When air is successively passed through sodium hydroxide solution, alkaline pyrogallol and then concentrated tetraoxosulphate (VI) acid, its remaining components are
- A. oxygen and water vapour
- B. oxygen and nitrogen
- C. carbon (IV) acid and noble gases
- D. nitrogen and noble gases
Correct Answer: D. nitrogen and noble gases
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