﻿Peculiarities 
  of 
  Solutions 
  of 
  Gases 
  in 
  Liquids. 
  

  

  499 
  

  

  carbonic 
  acid 
  was 
  taken. 
  The 
  tube 
  is 
  closed 
  at 
  one 
  end 
  and 
  

   open 
  at 
  the 
  other 
  end. 
  Its 
  diameter 
  (inside 
  measure) 
  is 
  about 
  

   19 
  millimetres, 
  its 
  length 
  490 
  millimetres. 
  

  

  The 
  desired 
  conditions 
  — 
  an 
  atmosphere 
  of 
  gaseous 
  ammonia 
  

   resting 
  upon 
  a 
  perfectly 
  saturated 
  ammoniacal 
  solution 
  

   superposed 
  upon 
  a 
  layer 
  of 
  pure 
  water 
  — 
  were 
  realized 
  by 
  the 
  

   following 
  procedure 
  : 
  — 
  

  

  The 
  tube, 
  its 
  closed 
  end 
  downwards, 
  was 
  nearly 
  filled 
  with 
  

   mercury, 
  viz., 
  to 
  about 
  8 
  c. 
  c. 
  from 
  the 
  top, 
  and 
  that 
  volume 
  

   of 
  strong 
  liquor 
  ammonise 
  was 
  poured 
  into 
  the 
  tube 
  so 
  as 
  to 
  

   fill 
  it. 
  Then 
  the 
  tube 
  was 
  closed 
  with 
  the 
  thumb, 
  reversed 
  

   and 
  introduced 
  into 
  the 
  mercurial 
  trough 
  in 
  the 
  well-known 
  

   manner. 
  The 
  strong 
  solution 
  of 
  ammonia, 
  being 
  in 
  that 
  

   manner 
  confined 
  at 
  reduced 
  pressure 
  over 
  mercury, 
  boiled 
  

   vigorously 
  and 
  evolved 
  an 
  atmosphere 
  of 
  ammonia 
  resting 
  

   upon 
  a 
  perfectly 
  saturated 
  aqueous 
  solution 
  of 
  ammonia. 
  The 
  

   evolution 
  of 
  ammonia 
  having 
  ceased, 
  a 
  reading 
  of 
  the 
  volume 
  

   of 
  ammonia, 
  together 
  with 
  the 
  temperature 
  and 
  pressure, 
  was 
  

   performed. 
  Then 
  a 
  measured 
  quantity 
  of 
  distilled 
  water 
  

   was 
  passed 
  up, 
  using 
  a 
  delicate 
  pipette 
  and 
  carefully 
  avoiding 
  

   any 
  disturbance 
  of 
  the 
  liquid. 
  The 
  operation 
  having 
  been 
  

   successfully 
  accomplished, 
  the 
  layer 
  of 
  distilled 
  water 
  under- 
  

   neath 
  the 
  strong 
  ammonia 
  was 
  quite 
  visible, 
  and 
  remained 
  

   visibly 
  distinct 
  for 
  a 
  long 
  time. 
  The 
  following 
  readings 
  

   were 
  made 
  : 
  — 
  

  

  

  Observed 
  

   volume 
  of 
  NH 
  3 
  : 
  

   cubic 
  centiums. 
  

  

  Temperature 
  

   centigrade. 
  

  

  Pressure 
  : 
  

   millimetres. 
  

  

  495-5 
  

   5017 
  

   490-2 
  

  

  4850 
  

  

  Volume 
  of 
  

   NH.j 
  corrected 
  

   at 
  0° 
  and 
  760 
  

  

  mm. 
  (dry). 
  

  

  A 
  

  

  B 
  

  

  D 
  

  

  46o 
  

   43-5 
  

   400 
  

   39-0 
  

  

  12° 
  

   12° 
  

   12° 
  

   12°-5 
  

  

  29 
  04 
  c. 
  c. 
  

   27-50 
  „ 
  

   24-70 
  „ 
  

   23-80 
  „ 
  

  

  The 
  volume 
  of 
  ammonia 
  solution 
  was 
  8*0 
  c. 
  c, 
  and 
  A 
  is 
  the 
  

   volume 
  of 
  gaseous 
  ammonia 
  before 
  the 
  introduction 
  of 
  the 
  

   distilled 
  water. 
  

  

  The 
  volume 
  of 
  the 
  distilled 
  water 
  was 
  5'1 
  c. 
  c. 
  B 
  is 
  the 
  

   volume 
  of 
  gaseous 
  ammonia 
  remaining 
  after 
  the 
  introduction 
  

   of 
  the 
  distilled 
  water. 
  

  

  C 
  is 
  a 
  second 
  reading 
  of 
  the 
  gaseous 
  ammonia, 
  one 
  hour 
  

   having 
  elapsed 
  since 
  the 
  reading 
  B. 
  

  

  J) 
  is 
  a 
  later 
  reading 
  after 
  the 
  lapse 
  of 
  another 
  hour. 
  

  

  