 Into a dilute solution of muriate of gold, contained in a glass jar, put a long narrow slip of charcoal, and expose the whole to the direct light of the sun. The gold will be revived, and will appear on the charcoal in a metallic state, exhibiting a very...  The Elements of Experimental Chemistry - Seite 54von William Henry - 1819Vollansicht - Über dieses Buch
 | Friedrich Christian Accum - 1803 - 384 Seiten
...well-burnt charcoal, and L 3 expose it to the direct rays of the sun ; the gold will be revived and appear on the charcoal in a metallic state, exhibiting a very beautiful appearance. The same effect will be produced, without light, by boiling the charcoal in the solution for a few minutes.... | |
 | Friedrich Christian Accum - 1808 - 492 Seiten
...III. Gold is precipitated from its solution by charcoal. Into a perfectly neutral diluted solution of gold, contained in a glass jar, put a long narrow slip of well-burnt charcoal, and expose it to the direct rays of the sun ; the gold will be revived and appear... | |
 | Daniel Defoe - 1815 - 602 Seiten
...afterwards rc-disiolved in distilled water.) Into a dilute solution of gold contained in a glass j»r, put a long narrow slip of charcoal, and expose the...will be revived and will appear on the charcoal in a metalic state, exhibiting a beautiful appearance. The snrae change ensues without light if the solution... | |
 | John Lee Comstock, Sir Richard Phillips - 1822 - 260 Seiten
...from the gold and restores it to its metallic state. Exp. } . Into a dilute solution of nitro-muriate of gold, contained in a glass jar, put a long narrow...whole to the direct light of the sun. The gold will he revived and will cover the charcoal with a coat of the metal, exhibiting a very heautiful appearance.... | |
 | John Lee Comstock - 1825 - 252 Seiten
...from the gold and restores it to its metallic state. Exp. 1. Into a dilute solution of nitro-muriate of gold, contained in a glass jar, put a long narrow...light of the sun. The gold will be revived and will cover the charcoal with a coat of the metal, exhibiting a beautiful appearance. Obs. By the assistance... | |
 | 1826 - 652 Seiten
...reduce the gold to a metallic form, as in the following examples: K Into a dilute solution of chloride of gold, contained in a glass jar, put a long narrow...the solution be exposed to a temperature of 212°. fij Moisten a piece of white taffeta riband, with the dilute solution of gold, and expose it to a current... | |
 | 1897 - 1086 Seiten
...gives a purple stain to the skin, and is susceptible of crystallization." On p. 54 (same vol.) we find: "Into a dilute solution of muriate of gold contained...the solution be exposed to a temperature of 212°." The following is quoted from a work called An Essay on Combustion, by Mrs. Fulhame, published in 1794... | |
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