Papers on etherification and on the constitution of salts / by Alexander W. Williamson ... (1850-1856).

  • Williamson, Alexander W. (Alexander William), 1824-1904.
Date:
1902
Catalogue details

Licence: In copyright

Credit: Papers on etherification and on the constitution of salts / by Alexander W. Williamson ... (1850-1856). Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

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    be considered proportional' to the quantity of one couple compared to that of the other. Now as the proportion is only kept up by the number of exchanges in the one direction being absolutely the same in each moment of time as those in the opposite direc- tion, it is clear that the relative velocity of interchange must be greatest between the elements of that couple of which the quantity is least ; and chemical force must be inversely proportional to the velocity of these interchanges. ON ETHERIFICATION.* THE question of the transformation of alcohol into ether and water by the agency of sulphuric acid, may be divided into two parts ; first, the relative weight of the substances engaged in the reaction ; and, secondly, the actual process by which the trans- formation is effected. In a preceding memoir, read before the British Association last autumn, I briefly described the formation and properties of certain new ethers, which seemed to solve at least the first part of this question, i.e. the relative formulas of alcohol and ether. I now lay before the Society a more exact account of the process by which these bodies were obtained, with their analysis, to which I have to add a direct evidence of the process by which sulphuric * [From The Quarterly Journal o[ the Chemical Society of London, vol. iv. (1852), pp. 229-239.]