Reagent to confirm the presence of ethanal: Add Tollens’ reagent / ammoniacal silver nitrate / aqueous silver nitrate followed by 1 drop of aqueous sodium hydroxide, then enough aqueous ammonia to dissolve the precipitate formed
sorry if this is a dense question, but are these separate steps or part of the tollens test, ive never seen them on a markscheme before.
Reagent to confirm the presence of ethanal: Add Tollens’ reagent / ammoniacal silver nitrate / aqueous silver nitrate followed by 1 drop of aqueous sodium hydroxide, then enough aqueous ammonia to dissolve the precipitate formed
sorry if this is a dense question, but are these separate steps or part of the tollens test, ive never seen them on a markscheme before.
That's basically how you make Tollens' reagent. So you get a mark for saying that Tollens' reagent should be added, or that ammoniacal silver nitrate (which is technically what Tollens' reagent is - the NaOH ensures the solution stays alkaline/basic) should be added or describing all the steps to produce Tollens' reagent (which is the third point). : )