﻿266 
  Gooch 
  and 
  Morley 
  — 
  Determination 
  of 
  Gold. 
  

  

  Table 
  III. 
  

  

  Gold 
  chloride 
  made 
  by 
  dissolving 
  0"0104 
  grm. 
  of 
  pure 
  gold 
  in 
  the 
  manner 
  

  

  described 
  and 
  diluting 
  to 
  200<="'l 
  

  

  N 
  

  

  Sodium 
  thiosulphate, 
  nearly 
  , 
  — 
  0"17012 
  to 
  1 
  liter. 
  

  

  js^ 
  1000 
  

  

  Iodine, 
  nearly 
  --- 
  =0-13697 
  

  

  1000 
  

   Potassium 
  iodide 
  =10 
  grms. 
  

  

  Portions 
  were 
  

  

  treated 
  with 
  the 
  potassium 
  iodide 
  without 
  previous 
  dilution. 
  

  

  

  AuCla 
  

  

  KI 
  

  

  NaaSaOa 
  

  

  Gold 
  

  

  Gold 
  

  

  

  

  taken. 
  

  

  taken. 
  

  

  used. 
  

  

  taken. 
  

  

  found. 
  

  

  Error. 
  

  

  

  cm 
  2 
  

  

  grm. 
  

  

  cm^. 
  

  

  grm. 
  

  

  grm. 
  

  

  grm. 
  

  

  ( 
  1) 
  

  

  1 
  

  

  0-005 
  

  

  0-55 
  

  

  0-000052 
  

  

  0-000058 
  

  

  + 
  0-000006 
  

  

  ( 
  2) 
  

  

  1 
  

  

  0-005 
  

  

  0-55 
  

  

  0-000052 
  

  

  0-000058 
  

  

  + 
  0-000006 
  

  

  ( 
  3) 
  

  

  2 
  

  

  0-005 
  

  

  1-06 
  

  

  0-000104 
  

  

  0-000112 
  

  

  + 
  0-000008 
  

  

  ( 
  4) 
  

  

  2 
  

  

  0-005 
  

  

  1-08 
  

  

  0-000104 
  

  

  0-000114 
  

  

  + 
  0-000010 
  

  

  ( 
  5) 
  

  

  5 
  

  

  0-01 
  

  

  2-45 
  

  

  0-000260 
  

  

  0-000260 
  

  

  0-000000 
  

  

  ( 
  6) 
  

  

  5 
  

  

  0-01 
  

  

  2-50 
  

  

  0-000260 
  

  

  0-000265 
  

  

  + 
  0-000005 
  

  

  ( 
  '7) 
  

  

  5 
  

  

  0-01 
  

  

  2-45 
  

  

  0-000260 
  

  

  0-000260 
  

  

  0-000000 
  

  

  ( 
  8) 
  

  

  5 
  

  

  0-01 
  

  

  2-50 
  

  

  0-000260 
  

  

  0-000265 
  

  

  + 
  0-000005 
  

  

  ( 
  9) 
  

  

  5 
  

  

  0-01 
  

  

  2-50 
  

  

  0-000260 
  

  

  0-000265 
  

  

  + 
  0-000005 
  

  

  (10) 
  

  

  10 
  

  

  02 
  

  

  4-86 
  

  

  0-000520 
  

  

  0-000515 
  

  

  — 
  0-000005 
  

  

  (11) 
  

  

  10 
  

  

  0-02 
  

  

  4-85 
  

  

  0-000520 
  

  

  0-000517 
  

  

  — 
  0-000003 
  

  

  (12) 
  

  

  10 
  

  

  0-02 
  

  

  4-90 
  

  

  0-000520 
  

  

  0-000520 
  

  

  0-000000 
  

  

  (13) 
  

  

  10 
  

  

  0-02 
  

  

  4-80 
  

  

  0-000520 
  

  

  0-000512 
  

  

  -0-000008 
  

  

  (14) 
  

  

  10 
  

  

  0-02 
  

  

  4-84 
  

  

  0-000520 
  

  

  0-000516 
  

  

  -0-000004 
  

  

  