The philosophy of experimental chemistry: in two volumes (Volume 1).

  • James Cutbush
Date:
1813
Catalogue details

Licence: Public Domain Mark

Credit: The philosophy of experimental chemistry: in two volumes (Volume 1). Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    The cases of affinity, which take place in the drj way, as it is called, in which heat is the decomposing power, appear to be subject in some degree to the objections, on the theory of elective attractions, given by Berthollet. It is unnecessary, therefore, to annex a table of affinities by heat, as our knowledge of these operations is but partial, and little utility can arise from them. One or two examples may prove useful. In the preparation of corrosive stibHmatt, a double decomposition, by ,/ire, takes place, as will appear in the following diagram. New Comfiou.'/ds. Muriate of Soda. New C'cth/icujicis. Muriate of J Muriatic aci mercury, j Sulphuric a( iatic acid Soda / Sulphate of ic acid Mercury f soda. Sulphated Mercury. Therefore, on exposing a mixture of sulphate of mercury and muriate of soda to heat, the sulphuric acid emits the mercury and passes to the soda, forming sulphate of soda, which remains at the bottom of the subliming vessel, whilst the muriatic acid unites with the mercury, and sublimes into a muriate of mercury. Or, if an alloy of gold and copper be exposed to heat with sulphuret of antimony (crude antimony) a suiphu- ret of copper, and an alloy of gold and antimony will be produced, as follows. New Com/i. Alloy of Gold and Copper. New Com]:. ^ Sulphuret J Copper Gold I Alloy of gold of copper. | Sulphur Antimony C and antimony. Sulphuret of Antimony. The following cases of mutual decomposition, v I take place either by simple or compound affinity, extracted from Duncan's Pharmacopen.
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