﻿438 
  Dr. 
  Gr. 
  W. 
  Todd 
  on 
  Reaction- 
  Velocity 
  Curves 
  for 
  

   When 
  A 
  is 
  in 
  excess 
  we 
  have 
  by 
  similar 
  reasoning, 
  

   since 
  v 
  oc 
  36 
  + 
  2(a— 
  6), 
  

  

  and 
  v 
  ozZb{l 
  + 
  uX) 
  + 
  2(a-b), 
  

  

  K^r 
  j^F-V 
  . 
  • 
  ••<■» 
  

  

  jo 
  in 
  this 
  case 
  being 
  -^ 
  . 
  

  

  If 
  w6 
  molecules 
  of 
  an 
  inactive 
  gas 
  are 
  also 
  present 
  in 
  the 
  

   initial 
  mixture, 
  equation 
  (4) 
  becomes 
  

  

  1+ 
  3 
  " 
  x 
  

  

  Reactions 
  with 
  B 
  in 
  excess. 
  

  

  Let 
  the 
  volume- 
  change 
  when 
  neither 
  reactant 
  is 
  in 
  excess 
  

   be 
  given 
  by 
  

  

  2 
  vols. 
  + 
  1 
  vol. 
  ->• 
  2 
  vols. 
  

  

  — 
  3' 
  

  

  Equation 
  (3) 
  becomes 
  

  

  _J_(_J_ 
  log 
  £(i=a 
  + 
  £±i^_-l 
  

  

  / 
  )+2l( 
  j 
  p-l) 
  2 
  ° 
  g 
  * 
  p-X 
  %-11-Xj" 
  

  

  X 
  -2 
  -4 
  -5 
  6 
  -7 
  8 
  9 
  10 
  

  

  Jc(~) 
  2 
  t 
  -271 
  '815 
  1-333 
  2-253 
  4147 
  9333 
  3600 
  <x> 
  

  

  X 
  -3 
  5 
  -6 
  -7 
  -8 
  9 
  1*0 
  

  

  *(~) 
  2 
  t 
  -371 
  '98 
  1-58 
  2-70 
  5-30 
  17'0 
  oo 
  

  

  X 
  -3 
  «5 
  -7 
  '8 
  -9 
  10 
  

  

  k[j~)t 
  -226 
  -547 
  1-363 
  245 
  590 
  oo 
  

  

  