﻿496 
  

  

  Dr. 
  B. 
  D. 
  Kleeman 
  on 
  some 
  

  

  these 
  temperatures. 
  These 
  values 
  were 
  obtained 
  by 
  linear 
  

   interpolation 
  from 
  Whittaker's 
  tables*. 
  Table 
  II. 
  shows 
  that 
  

  

  the 
  ratio 
  — 
  at 
  corresponding 
  temperatures 
  is 
  very 
  approxi- 
  

   mately 
  constant. 
  

  

  Equation 
  (2) 
  affords 
  another 
  test 
  of 
  the 
  validity 
  of 
  the 
  

   assumption 
  that 
  «' 
  is 
  the 
  same 
  for 
  all 
  liquids 
  at 
  corre- 
  

  

  -nr 
  2 
  

  

  spending 
  states. 
  If 
  the 
  assumption 
  is 
  true 
  then 
  -^^^ 
  

  

  should 
  be 
  a 
  constant 
  for 
  liquids 
  at 
  corresponding 
  tempe- 
  

   ratures. 
  Substituting 
  from 
  Table 
  III. 
  we 
  obtain 
  Table 
  IV. 
  

  

  Table 
  IY. 
  

  

  Name 
  of 
  liquid. 
  

  

  ExP.^ 
  

  

  E,p,2 
  

  

  ExP3= 
  

  

  EoPx^ 
  

  

  E^.i. 
  

  

  E,Px^ 
  

  

  ExPa^. 
  

   E..Px^ 
  

  

  Ether 
  

  

  •939 
  

   •956 
  

   •928 
  

   •959 
  

  

  •906 
  

   •884 
  

   •910 
  

   •909 
  

  

  •820 
  

   •842 
  

   •847 
  

   •837 
  

   •845 
  

  

  •721 
  

  

  •703 
  

   •742 
  

  

  Metbyl 
  formate 
  

  

  Carbon 
  tetrachloride 
  ... 
  

   Benzene 
  

  

  Chloro 
  benzene 
  

  

  •931 
  •991 
  

  

  

  

  

  which 
  shows 
  that 
  the 
  relation 
  is 
  true 
  for 
  several 
  sets 
  of 
  cor- 
  

   responding 
  temperatures. 
  The 
  ratio 
  is 
  not 
  the 
  same, 
  however, 
  

   for 
  each 
  set 
  of 
  corresponding 
  temperatures, 
  as 
  would 
  be 
  the 
  

   case 
  if 
  Binstein^s 
  assumption 
  of 
  a 
  constant 
  k! 
  were 
  true. 
  

   From 
  equation 
  (4) 
  we 
  obtain 
  another 
  test 
  of 
  the 
  assumption. 
  

  

  -^2 
  should 
  be 
  a 
  constant 
  for 
  all 
  liquids 
  at 
  corresponding 
  

  

  temperatures. 
  The 
  agreement 
  of 
  this 
  with 
  experimental 
  

   results 
  is 
  shown 
  in 
  Table 
  V. 
  Though 
  the 
  ratio 
  is 
  constant 
  

  

  Table 
  V. 
  

  

  Name 
  of 
  liquid. 
  

  

  ^xPa" 
  

  

  

  

  \P.' 
  

  

  Ether 
  

  

  Methyl 
  formate 
  

  

  1-09 
  

   1-07 
  

   1-06 
  

   1-12 
  

  

  no 
  

  

  M5 
  

   1-13 
  

   1-13 
  

   117 
  

   1-13 
  

  

  i-59 
  

   1-54 
  

   1-55 
  

  

  vm 
  

  

  156 
  

  

  2-38 
  

   2-31 
  

   2-81 
  

   2-55 
  

  

  Carbon 
  tetrachloride 
  . 
  . 
  . 
  

   Benzene 
  

  

  Chloro 
  benzene 
  

  

  

  * 
  Loc. 
  cit. 
  

  

  