I. On the specific heat and other physical characters of mixtures of methylic alcohol and water, and on certain relations existing between the specific heat of a mixture or solution and the heat evolved or absorbed in its formation
The pure methylic alcohol used in these experiments was prepared from rectified wood-spirit according to a process of E. Th. Chapman, being a modified chloride-of-calcium process as originally recommended by Sir Robert Kane. The anhydrous alcohol obtained had a specific gravity of •81371 at 10°C.; i...
| Published in: | Proceedings of the Royal Society of London |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
The Royal Society
1872
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1098/rspl.1871.0066 https://royalsocietypublishing.org/doi/pdf/10.1098/rspl.1871.0066 |
| Summary: | The pure methylic alcohol used in these experiments was prepared from rectified wood-spirit according to a process of E. Th. Chapman, being a modified chloride-of-calcium process as originally recommended by Sir Robert Kane. The anhydrous alcohol obtained had a specific gravity of •81371 at 10°C.; it boiled at a temperature of 58°.6C. under a pressure of 757.4 millims., had a specific heat of 58.325 between the temperatures 60° and 18°, and was perfectly miscible with water in every proportion. When oxidized with excess of bichromate and sulphuric acid, it yielded nothing but carbonic acid and water. Section I. Specific Heat . This is estimated in the usual manner, by heating a known weight of the liquid enclosed in a suitable vessel to a certain temperature, and plunging it, vessel and all, into the water of a calorimeter; the rise in temperature produced will, with the necessary corrections, furnish the data required for the calculation of the specific heat sought. his calculation was performed by help of the following formula:— C = W ( t' - t )/ m (T - t ') - μ/m . |
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