The Freezing Point Boiling Point And Conductivity Methods
The book The Freezing Point Boiling Point And Conductivity Methods was written by author Harry Clary Jones Here you can read free online of The Freezing Point Boiling Point And Conductivity Methods book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Freezing Point Boiling Point And Conductivity Methods a good or bad book?
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The expression by which the molecular weights are calculated, is analogous to that already given for calcu- lating molecular weights from lowerings of the freezing- point of solvents by dissolved substances. If we repre- sent the unknown molecular weight by m, the weight of the substance used by w t the weight of the solvent by W, and the rise in the boiling-point of the solvent by R, we have Cw m =. in which C is a constant of different value for each sol- vent. The analogy between the lowerin...g of the freezing- point and the rise in the boiling-point holds still further, in that the value of C can be calculated from the same formula : c=-ill ioo L THE BOILING-POINT METHOD 29 When applied to calculating the constant for the boil- ing-point method of determining molecular weights, T is the absolute temperature at which the pure solvent boils, and L the latent heat of evaporation of the solvent. The values of C for a number of the solvents more commonly used, are given below. The solvents are arranged in the order of their boiling-points.
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