﻿Van 
  Name 
  and 
  Hill 
  — 
  Alcohol 
  and 
  Cane 
  Sugar. 
  551 
  

  

  observed 
  rates 
  of 
  solution 
  of 
  cadmium 
  we 
  obtain, 
  the 
  figures 
  in 
  

   the 
  middle 
  column 
  of 
  Table 
  V. 
  The 
  calculated 
  values 
  of 
  a 
  

   diminish 
  with 
  increasing 
  concentration 
  of 
  the 
  non-electrolyte, 
  

   though 
  much 
  more 
  rapidly 
  with 
  sugar 
  than 
  with 
  alcohol. 
  Nev- 
  

   ertheless, 
  by 
  selecting 
  from 
  the 
  series 
  for 
  alcohol 
  the 
  value 
  of 
  

   a 
  best 
  adapted 
  to 
  the 
  purpose, 
  and 
  with 
  it 
  recalculating 
  K 
  from 
  

  

  Fig. 
  2. 
  

  

  the 
  equation 
  of 
  Arrhenius, 
  a 
  good 
  agreement 
  with 
  the 
  meas- 
  

   ured 
  velocity 
  constants 
  is 
  obtained 
  (see 
  Table 
  V, 
  last 
  column). 
  

   Although 
  the 
  value 
  a 
  = 
  O'lM 
  is 
  higher 
  than 
  would 
  be 
  expected 
  

   from 
  the 
  diffusion 
  measurements 
  of 
  Arrhenius, 
  it 
  cannot 
  be 
  

   regarded 
  as 
  an 
  impossible 
  value 
  for 
  the 
  hitherto 
  undetermined 
  

   effect 
  of 
  alcohol 
  upon 
  the 
  diffusion 
  of 
  potassium 
  triiodide, 
  so 
  

   that 
  the 
  validity 
  of 
  Arrhenius' 
  equation 
  in 
  this 
  particular 
  case, 
  

   if 
  not 
  clearly 
  established, 
  is 
  certainly 
  not 
  disproved. 
  

  

  With 
  cane 
  sugar, 
  however, 
  this 
  procedure 
  gives 
  no 
  satisfac- 
  

   tory 
  agreement 
  between 
  the 
  observed 
  and 
  calculated 
  results 
  

   whatever 
  value 
  of 
  a 
  be 
  employed. 
  The 
  value 
  0*925, 
  from 
  

   which 
  the 
  results 
  in 
  Table 
  V 
  were 
  calculated, 
  is 
  perhaps 
  as 
  

  

  