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Experiments for 'silver nitrate'
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Results for 'silver nitrate':
EXPERIMENT 1 --------------- This is a very nice experiment, involving beautifully coloured compounds, but it is a hazardous experiment as well, due to the use of mercury (II) compounds. Mercury (II) builds a complex with excess iodide, [HgI4]2-, which gives a beautiful bright yellow precipitate with Ag+ and a beautiful bright brick- red precipitate with Cu+.
EXPERIMENT 2 --------------- Persulfate is capable of oxidizing Mn2+ in acid environments, but silver (I) is needed as a catalyst. Oxidation, however, is not easy and just a small part is oxidized to permanganate, a large part is oxidized no further than MnO2.
EXPERIMENT 3 --------------- This sequence of experiments shows that sulfite is capable of reducing silver (I), copper (II) and iron (III), but that these reactions all show their own peculiarities. Sulphur in the +4 oxidation state is a mild reductant.
EXPERIMENT 4 --------------- When aqueous ammoniacal silver is reduced by glucose, a nice silver mirror is produced. Peroxosulfate is capable of oxidizing silver to a higher oxidation state (+2 or +3), even in acidic environments.
EXPERIMENT 5 --------------- The peroxosulfate ion ([S2O8]2-) is capable of oxidizing silver (I) to silver (II) or silver (III). A higher oxide of silver is precipitated. This oxide is easily decomposed under the liberation of oxygen.
EXPERIMENT 6 --------------- Silver (I) gives a pale yellow precipitate with carbonates.
EXPERIMENT 7 --------------- Silver (I) is not reduced by hydroxyl amine in neutral environments. When made alkaline, it is reduced to metallic silver immediately.
EXPERIMENT 8 --------------- Silver (I) reacts with persulfate. Probably a higher oxidation state of silver is produced (oxidation state II or III).
EXPERIMENT 9 --------------- Silver nitrite is only sparingly soluble in water. When dilute acid is added, the compound is destroyed again.
EXPERIMENT 10 --------------- Silver (I) gives a precipitate with bromate. The compound silver bromate does not dissolve well in water. When acidified, the compound still does not dissolve, hence the acid HBrO3 is fairly strongly ionized, otherwise the silver bromate would dissolve appreciably. The precipitate of silver bromate, however, still shows strong oxidizing properties, meaning that it is sufficiently soluble for releasing bromate ions in solution, needed for the redox reaction to occur.
EXPERIMENT 11 --------------- Silver (I) ions form a precipitate, both with ferrocyanide and with ferricyanide. The precipitate with ferricyanide is decomposed by alkalies, the precipitate with ferrocyanide is more stable. Both compounds are attacked by thiosulfate, which complexes the silver and causes the solid to dissolve again.
EXPERIMENT 12 --------------- Silver ions react with organic matter and are easily reduced to silver. This causes brown or black staining on many materials.
EXPERIMENT 13 --------------- Silver (I) forms a yellow precipitate with bicarbonate, probably by precipitating carbonate ions and driving off carbon dioxide.
EXPERIMENT 14 --------------- Silver salts give a yellow precipitate with silicates. This precipitate becomes white on addition of sulphuric acid. When a large quantity of sodium hydroxide is added, then a dark, almost black, solid is created.
EXPERIMENT 15 --------------- Silver (I) gives a precipitate with bicarbonate, which becomes yellow and more compact on standing. With H2O2 a dark compound is formed, which dissolves in nitric acid under formation of a gas. Is this dark compound a higher oxide of silver (e.g. Ag2O2?).
EXPERIMENT 16 --------------- Silver (I) gives a white precipitate with thiocyanate, which does not dissolve in excess ammonia. Hydroxyl amine does not affect this precipitate.
EXPERIMENT 17 --------------- Silver (I) does not give a precipitate with hydroxyl amine sulfate (if concentrations are not too high), but ammonia causes formation of a precipitate, which does not dissolve in excess ammonia.
EXPERIMENT 18 --------------- Silver (I) forms a precipitate with bromates, while it does not do so with chlorates.
EXPERIMENT 19 --------------- Silver (I) ions, when treated with hydroxide give brown silver (I) oxide. When hydrogen peroxide is added, then that is decomposed and the precipitate of oxide does not change noticeably. When, however, hydrogen peroxide is first mixed with a solution of a silver (I) salt and then the hydroxide is added, then a black precipitate is formed. Probably this is finely divided metallic silver.
EXPERIMENT 20 --------------- Silver nitrate reacts very violently with magnesium, but only if the reaction is started by adding some water. Once the reaction runs, it continues through the dry mixture.
EXPERIMENT 21 --------------- Silver (I) ions give a dark brown precipitate with sulfide.
EXPERIMENT 22 --------------- Silver (I) gives a bordeaux-red precipitate with dichromate, which slightly dissolves in water.
EXPERIMENT 23 --------------- Chromium (III) is oxidized to dichromate (chrome (VI)) by persulfate. This reaction is catalyzed by silver (I).
EXPERIMENT 24 --------------- Silver bromide is reduced by metol in alkaline medium.
EXPERIMENT 25 --------------- Silver (I) is reduced to metallic silver by metol. This metallic silver is easily oxidized by peroxosulfate. Insoluble silver (I) compounds dissolve in thiosulfate solutions (principle of photography fixer) while metallic silver is not affected. When a mild oxidizer is added, the metallic silver also dissolves (principle of photography reducer, Farmer's reducer).
EXPERIMENT 26 --------------- Silver(I) ion gives a chocolate brown precipitate with arsenate.
EXPERIMENT 27 --------------- Peroxodisulfate ion gives a deep brown complex with silver ions in nitric acid. Oxone (peroxomonosulfate) does not give such a complex, actually, it quickly destroys such a complex.
EXPERIMENT 28 --------------- Finely divided magnesium powder violently reacts with wet cupric nitrate and with wet ferric nitrate. The dry solids do not react.
EXPERIMENT 29 --------------- Silver chlorite is stable, but only light heating is required for its decomposition.
End of results for 'silver nitrate'
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