Leah.J
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Report Thread starter 1 year ago
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Could anyone tell me the correct procedure of doing this , or if the followinh is correct .
Mix AgNO3 with NaOH and ammonia ( The NaOH is supposed to create a basic environment but Idk what ammonia is for ) and then shake ? You could also warm the mixture I think, but I'm not sure
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BobbJo
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https://en.wikipedia.org/wiki/Tollens%27_reagent


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This reagent is not commercially available due to its short shelf life, so it must be freshly prepared in the laboratory. One common preparation involves two steps. First a few drops of dilute sodium hydroxide are added to some aqueous silver nitrate. The OH− ions convert the silver aquo complex form into silver oxide, Ag2O, which precipitate from the solution as a brown solid:

2 AgNO3 + 2 NaOH → Ag2O (s) + 2 NaNO3 + H2O
In the next step, sufficient aqueous ammonia is added to dissolve the brown silver(I) oxide. The resulting solution contains the [Ag(NH3)2]+ complexes in the mixture, which is the main component of Tollens' reagent. Sodium hydroxide is reformed:

Ag2O (s) + 4 NH3 + 2 NaNO3 + H2O → 2 [Ag(NH3)2]NO3 + 2 NaOH
Alternatively, aqueous ammonia can be added directly to silver nitrate solution.[2] At first, ammonia will induce formation of solid silver oxide, but with additional ammonia, this solid precipitate dissolves to give a clear solution of diamminesilver(I) complex ( [Ag(NH3)2]+). Filtering the reagent before use helps to prevent false-positive results.
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