﻿Goocli 
  and 
  Baldioin 
  — 
  Action 
  of 
  Acetylene. 
  

  

  357 
  

  

  elation 
  is 
  reached. 
  In 
  the 
  experiments 
  with 
  the 
  oxides 
  of 
  cop- 
  

   per 
  and 
  iron 
  the 
  temperature 
  at 
  which 
  the 
  acetylene 
  begins 
  to 
  

   act 
  is 
  evidently 
  above 
  the 
  point 
  at 
  which 
  sensitive 
  acetjlides 
  

   would 
  naturally 
  dissociate, 
  and 
  we 
  have 
  in 
  the 
  observed 
  phe- 
  

   nomena 
  no 
  evidence 
  of 
  the 
  formation 
  of 
  such 
  compounds 
  of 
  

   copper 
  and 
  iron 
  under 
  the 
  conditions 
  of 
  experimentation. 
  

  

  In 
  experiments 
  (1) 
  to 
  (3) 
  of 
  the 
  following 
  table 
  are 
  given 
  

   the 
  results 
  of 
  the 
  analysis 
  of 
  several 
  products 
  obtained 
  by 
  con- 
  

   ducting 
  acetylene 
  (puriiied 
  by 
  passing 
  through 
  a 
  solution 
  of 
  

   mercuric 
  chloride 
  in 
  hydrochloric 
  acid 
  and 
  dried 
  over 
  caustic 
  

   potash) 
  over 
  pure 
  cuprous 
  oxide. 
  The 
  temperature 
  was 
  kept 
  

   in 
  these 
  experiments 
  at 
  225°, 
  and 
  in 
  the 
  course 
  of 
  a 
  half 
  hour 
  

   the 
  tube 
  was 
  choked 
  completely 
  by 
  material 
  compacted 
  by 
  the 
  

   pressure 
  to 
  (1) 
  a 
  spongy 
  mass 
  of 
  light-brown 
  color 
  on 
  the 
  exte- 
  

   rior 
  next 
  the 
  walls 
  of 
  the 
  tube, 
  (2) 
  darker 
  within 
  and 
  (3) 
  nearly 
  

   black 
  in 
  the 
  bottom 
  of 
  the 
  boat, 
  where 
  the 
  cuprous 
  oxide 
  lay 
  

   originally. 
  

  

  In 
  experiments 
  (I) 
  and 
  (5) 
  the 
  substances 
  analyzed 
  represent 
  

   the 
  products 
  of 
  the 
  action 
  of 
  acetylene 
  (not 
  specially 
  purified) 
  

   on 
  cupric 
  oxide. 
  

  

  Weio:ht 
  of 
  

   substance 
  

  

  taken. 
  

  

  grm. 
  

  

  

  Found. 
  

  

  

  

  Calculated. 
  

  

  

  CO, 
  

   grm. 
  

  

  H2O 
  

   grm. 
  

  

  CuO 
  

   grm. 
  

  

  C 
  

   grm. 
  

  

  01085 
  

   0-2042 
  

   0-1003 
  

  

  H 
  

   grm. 
  

  

  0075 
  

   00109 
  

   0054 
  

  

  Cu 
  

   grm. 
  

  

  0-0018 
  

   0-0036 
  

  

  by 
  difference 
  

   grm. 
  

  

  ^1) 
  0-1170 
  

  

  (2) 
  0-2247 
  

  

  (3) 
  0-1096 
  

  

  0-3978 
  

   0-7489 
  

   0-3678 
  

  

  0-0673 
  

   0-0979 
  

   0488 
  

  

  0-0022 
  

   0045 
  

  

  -00008 
  

   0-0003 
  

  

  (4) 
  1H60 
  

  

  (5) 
  0-1188 
  

  

  04116 
  

   0-3098 
  

  

  0-0579 
  

   00461 
  

  

  0-0182 
  

   0-0317 
  

  

  0-1123 
  

   0-0845 
  

  

  00064 
  

   0-0051 
  

  

  00146 
  

   00253 
  

  

  0-0027 
  

   00039 
  

  

  

  (1) 
  

  

  (2) 
  

  

  (3) 
  

  

  (4) 
  

  

  (5) 
  

  

  r 
  cent 
  of 
  carbon 
  

  

  92-74 
  

  

  90-88 
  

  

  91-51 
  

  

  82-57 
  

  

  71-13 
  

  

  " 
  hydrogen 
  _ 
  

  

  6-41 
  

  

  4-85 
  

  

  4-93 
  

  

  4-71 
  

  

  4-29 
  

  

  " 
  copper 
  

  

  1-54 
  

  

  

  3-29 
  

  

  10-74 
  

  

  21-30 
  

  

  " 
  oxygen 
  , 
  . 
  . 
  

  

  

  

  

  0-27 
  

  

  1-98 
  

  

  3-28 
  

  

  100-69 
  

  

  100-00 
  100-00 
  100-00 
  

  

  The 
  oxygen 
  present 
  in 
  these 
  products 
  is 
  obviously 
  propor- 
  

   tional 
  to 
  the 
  amount 
  of 
  copper 
  and 
  is 
  never 
  more 
  than 
  enough 
  

   to 
  be 
  completely 
  accounted 
  for 
  upon 
  the 
  supposition 
  that 
  some 
  

   of 
  the 
  original 
  oxide 
  taken 
  still 
  holds 
  its 
  oxygen. 
  So 
  far 
  as 
  

   the 
  analyses 
  show, 
  the 
  product 
  of 
  lightest 
  color 
  (1) 
  contains 
  

   very 
  little 
  copper 
  and 
  no 
  oxygen 
  ; 
  the 
  darkest 
  product 
  (3) 
  

   obtained 
  from 
  the 
  cuprous 
  oxide 
  contains 
  oxygen 
  correspond- 
  

   ing 
  to 
  a 
  mixture 
  of 
  two 
  parts 
  of 
  copper 
  with 
  three 
  parts 
  of 
  

   cuprous 
  oxide; 
  the 
  oxygen 
  in 
  the 
  products 
  of 
  (4:) 
  and 
  (5) 
  

  

  