Synthesis (i)
Place the silver in a porcelain crucible, then covered and heated with acetylene torch until the crubicle turned a bright orange glow. The molten silver will leave hot beads of freshly-solidified silver, then allowed to cool and then collected. Place the cooled silver in 50 mL beaker labeled solution A. Then filled about 3/4 full with concentreted nitric acid.Covered it with 1000 mL beaker and heated on sand bath. The expected outcome will be a reddish-brown fumes indicates as nitrogen oxides, and remained inside the 1000 mL beaker until the ventalation system carried out the fumes. The solution become yellow and then green. NExt, place the remainder silver in another beaker and covered withe HNO3. Add HCl to this beaker, with ratio 3HCl : 1HNO3. Because of the acid reacts with silver, silver chloride will precipated out as white clumps. The precipate will increase steadily for 4 hours with the final colour green. Labeled this beaker as solution B. After that, dilute the solution A 3 times its volume with distilled water. Reddish-brown nitrogen oxides will be released during dilution, then the green color of the liquid will turn to pale blue. Use a Buchner funnel and vacuum filtration flask to filter the solution. Place the filtrate on a hot plate to be evaporated, to carry off the nitric acid vapours. When the first silver nitrate cystals begin to form, discontinued the heating. Repeat the process to get purer silver nitrate. And for solution B, dilute the solution B 3 times its volume with distilled water as well, to cause the silver chloride to re-precipate. Use a Buchner funnel and vacuum filtration flask to filter the solution, and then wash it. Place the filtration in a clean beaker and covered with 25 mL of distilled water. Add three or four crystals sodium thiosulfate to the water and stir with a glass rod, to solubilize the silver chloride. Use a cleaned copper wire as the preliminary attempt at plating out the silver. After 10 minutes the wire in the solution, the wire began to assume a silvery coating, but the solution has to be remained clear. With wooden tongue depressor, silver metal will be scrapped off. This metal mostly black and crumblly, was saved for making silver nitrate solution of higher purity.

Safety precautions
-The safety goggles were worn at all times, because acids might cause lost of sight instantly.
-The acids were not heated without adequate ventilation. The vapors were collected by a fume hood which carries tthem out
-The fume cupboard was tested with a steam of smoke to make sure vapours were already being removed.  Ammonium chloride "smoke" could also be used which was produced from the vapours of hydrochloric acid and ammonia for testing the fume cupboard.
-Nitrogen dioxide shouldn't be inhaled under any circumstances because it is very poisonous.
- Do not pour silver, copper, or nickel solution down the sink, put in the recycle garbage bin
-The silver and its compounds were kept away from oxalic acid, oxalates, acetylene, calcium carbide, strong reducing agents or prolonged exposure to ammonia.

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