exam specific answers (organic analysis)
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give a reagent which could distinguish between aqueous silver nitrate and aqueous sodium nitrate, and state what would be observed in each case. (3)
• hydrochloric acid • silver nitrate - white precipitate • sodium nitrate - no observed change
state why the precise relative atomic mass for the 12C isotipe is exactly 12.00000 (1)
by definition/it is the standard isotope
give the observations you would expect when a few drops of silver nitrate solution are added to separate samples of propanoyl chloride and 1-chloropropane. (2)
• propanoyl chloride - white fumes • 1-chloropropane - no visible change
Explain how carbon dioxide causes global warming. (2)
• C=O bonds absorb infrared radiation • IR radiation emitted by earth doesn’t escape from atmosphere