Analytical Essays Towards Promoting the Chemical Knowledge of Mineral Substances
Analytical Essays Towards Promoting the Chemical Knowledge of Mineral Substances
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147 grains of a grey refidue, one of which dtflblved in muri- atic acid, and was added to the preceding fblution. The other grain was filicetius earth. The true quantity of the fulfhurj therefore, ^imovintcd to 49 grains.
g) While the muriatic folutlon was cooling, it depofited a quantity of icicular cryftals. Thefe being feparated, one half of the remaining fluid was diftilled over in a fmall retort, and, from the folution thus concentrated, more crys- tals, fimilar to the firft, were depofite...d. This treatment was continued until no more cryftals would form* When thefe cryftals, colledted together, were mingled with twice their weight of black flux, and reduced in an aflay-crucible, thinly lined with charcoal-duft, they afforded 160^ grains of lead. This lead, fubjeded to cupellation, emitted, at the firft application of heat, a few antimonial vapours; it then fined quietly, and left a button offtlver^ weighing ^ of a grain.
—This determines the proportion of, lead 9t i6o{ grains; from which, however, a trifliiig quaintity fliould be de- duced for the portion of antimony before mentioned; though it could not be well determined, befides that it could not weigh much above half a grain.
What to read after Analytical Essays Towards Promoting the Chemical Knowledge of Mineral Substances?
You can find similar books in the "Read Also" column, or choose other free books by Klaproth, M. H. (Martin Heinrich), 1743-1817 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
147 grains of a grey refidue, one of which dtflblved in muri- atic acid, and was added to the preceding fblution. The other grain was filicetius earth. The true quantity of the fulfhurj therefore, ^imovintcd to 49 grains.
g) While the muriatic folutlon was cooling, it depofited a quantity of icicular cryftals. Thefe being feparated, one half of the remaining fluid was diftilled over in a fmall retort, and, from the folution thus concentrated, more crys- tals, fimilar to the firft, were depofite...d. This treatment was continued until no more cryftals would form* When thefe cryftals, colledted together, were mingled with twice their weight of black flux, and reduced in an aflay-crucible, thinly lined with charcoal-duft, they afforded 160^ grains of lead. This lead, fubjeded to cupellation, emitted, at the firft application of heat, a few antimonial vapours; it then fined quietly, and left a button offtlver^ weighing ^ of a grain.
—This determines the proportion of, lead 9t i6o{ grains; from which, however, a trifliiig quaintity fliould be de- duced for the portion of antimony before mentioned; though it could not be well determined, befides that it could not weigh much above half a grain.
What to read after Analytical Essays Towards Promoting the Chemical Knowledge of Mineral Substances?
You can find similar books in the "Read Also" column, or choose other free books by Klaproth, M. H. (Martin Heinrich), 1743-1817 to read onlineMoreLess
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