﻿Ionic 
  Velocities, 
  and 
  Atomic 
  Sizes. 
  

  

  171 
  

  

  known 
  that 
  some 
  strong 
  acids 
  appear 
  to 
  have 
  maximum 
  

   molecular 
  conductivities 
  before 
  infinite 
  dilution 
  is 
  attained. 
  

  

  XL 
  

  

  J-0 
  

  

  •6 
  

  

  •4 
  

  

  1 
  

  

  

  

  

  

  

  

  

  

  

  

  

  t 
  

  

  ^ 
  

  

  

  

  

  

  

  

  

  

  

  

  \ 
  

  

  \ 
  

  

  

  \ 
  

  

  

  

  

  

  

  

  

  

  

  \ 
  

  

  \ 
  

  

  \ 
  

  

  

  

  

  

  

  

  

  J 
  

  

  

  

  

  

  ^ 
  

  

  CaCl^ 
  

  

  -^^1 
  

  

  ^ 
  

  

  ^Z 
  

  

  

  

  

  

  

  

  

  

  

  

  Ql&ki 
  

  

  0* 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  / 
  

  

  

  

  

  

  

  

  "V 
  

  

  

  

  

  

  

  

  

  

  -2154 
  

  

  -794- 
  

  

  tn 
  73 
  

  

  •26 
  

  

  This 
  seems 
  to 
  be 
  only 
  an 
  exaggerated 
  manifestation 
  of 
  the 
  

   change 
  of 
  curvature 
  shown 
  in 
  our 
  graph 
  for 
  NaOl 
  solutions, 
  

   and 
  to 
  be 
  ascribable 
  to 
  the 
  same 
  cause, 
  namely 
  our 
  present 
  

   inability 
  to 
  estimate 
  the 
  change 
  in 
  the 
  ionization 
  of 
  the 
  water 
  

   brought 
  about 
  by 
  the 
  presence 
  of 
  the 
  electrolytic 
  solute. 
  In 
  

   spite 
  of 
  the 
  experimental 
  refinements 
  in 
  recent 
  measurements 
  

   of 
  electrical 
  conductivities, 
  our 
  knowledge 
  of 
  the 
  molecular 
  

   conductivities 
  of 
  solutions 
  at 
  infinite 
  dilution 
  is 
  less 
  definite 
  

   than 
  most 
  physical 
  chemists 
  have 
  assumed 
  it 
  to 
  be. 
  If 
  we 
  

   take 
  the 
  NaOl 
  graph 
  to 
  be 
  a 
  parabola 
  whose 
  vertex 
  is 
  the 
  

   point 
  m 
  1 
  / 
  3 
  =l*62, 
  xi 
  = 
  '697, 
  we 
  find 
  its 
  equation 
  to 
  be 
  

  

  *t--697 
  = 
  -1155(l-62— 
  m 
  1 
  / 
  8 
  ) 
  5 
  

  

  (11) 
  

  

  the 
  values 
  of 
  xi 
  given 
  by 
  this 
  being 
  entered 
  up 
  in 
  Table 
  I. 
  

   as 
  xi 
  calc. 
  The 
  discrepancies 
  between 
  the 
  actual 
  and 
  

   calculated 
  values 
  of 
  xi 
  are 
  probably 
  due 
  to 
  the 
  distortion 
  of 
  

  

  