Status of the Values of the Fundamental Constants for Physical Chemistry as of July 1, 1951¹

Units and Physical Constants

“…16 The defining point, and the primary and secondary fixed points, involve thermodynamic equilibrium among three phases (gasliquid-solid, triple point) or between two phases (liquidsolid, freezing point, or gas-liquid, boiling point) of a pure substance. 16 The defining point, and the primary and secondary fixed points, involve thermodynamic equilibrium among three phases (gasliquid-solid, triple point) or between two phases (liquidsolid, freezing point, or gas-liquid, boiling point) of a pure substance.…”

Thermodynamic quantities for the dissociation equilibria of biologically important compounds. 5. The second acid dissociation of 2 aminoethanol 1-phosphoric acid

“…The values of and the ratio J/cal. are those given by Rossini, Gucker, Johnston, Pauling & Vinal (1952).…”

A FREQUENCY-MODULATED ULTRASONIC INTERFEROMETER: ADIABATIC COMPRESSIBILITY OF AQUEOUS SOLUTIONS OF N A C L AND KC L AT 25°C

“…(3 = , -6.0112 X 10-6c + 8.827 X 10-7c/2 + 8.85 X 10-8c2 (NaCl), (7) (3 = -5.7596 X 10-6c + 9.519 X 10-c13/2 + 6.21 X 10-8c2 (KCl). (8) These yield quadratic equations for the apparent molar adiabatic compressibility, 412 = -1 [MA -103kc-'(dj3 -di#) I cc bar-' mole-'. (9) Plots of 4K2 for the two salts in Figure 3 include results for KCl obtained by Dr. Tatsuya Yasunaga of the University of Hiroshima with an earlier apparatus in our laboratory.…”