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Guldberg rule

The earliest estimation method for the critical temperature is the Guldberg rule, which was established already in 1887 ... [Pg.66]

Graphical representation, 423 Gravity, 21, 201 Griineisen s relation, 486 Guldberg s rule, 234... [Pg.541]

Ramsay and Young also found that for a given pressure the ratio of the absolute temperature to the absolute critical temperature is approximately consent. This is an extension of Guldberg s rule ( 7.VII C). Adams found that the b.p. abs. at p atm. is related to that at 1 atm. by the formula ... [Pg.288]

Since Tb is approximately fTc (Guldberg s rule, 7.VH B), LJTe should be approximately constant. J. J, Thomson deduced from some general considerations that this should be so, and showed that it was approximately verified by the experimental results. [Pg.362]

Every pure substance has a definite critical temperature, critical pressure, and critical density. We shall discuss the relationships between these quantities and the molecular weight in greater detail in a later paragraph. We may mention at this stage that Guldberg found the normal boiling point of all substances to be a nearly constant fraction of their critical temperature measured on the absolute scale. The table on p. 57 shows how far this rule is obeyed. ... [Pg.56]

Supercritical fluids make ideal solvents because their density is only about 30% that of a normal fluid, a factor sufficient to provide for good solvent capability, but low enough for high diffusivity and rapid mass transfer. A sample of gas is supercritical whenever its temperature and pressure are above thar critical values, but in practice the operating temperatures are not far above 7. A simple way to predict the solvent characteristics of a low-boiling substance in its supercritical state is to compare the boiling point (Ti,) and critical temperature (TJ of substance. The Guldberg s rule ... [Pg.9]

The rates of elementary reactions can be calculated by assuming the rule of mass action kinetics. According to the chemical kinetic law of mass action (Waage and Guldberg 1864)... [Pg.11]

See other pages where Guldberg rule is mentioned: [Pg.173]    [Pg.173]    [Pg.176]    [Pg.47]    [Pg.317]    [Pg.321]    [Pg.441]    [Pg.9]    [Pg.176]    [Pg.317]    [Pg.321]    [Pg.361]    [Pg.441]    [Pg.269]    [Pg.588]    [Pg.509]   
See also in sourсe #XX -- [ Pg.66 ]



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