﻿Determination 
  of 
  Potassium 
  Spectroscopically. 
  

  

  457 
  

  

  Experiment 
  IV. 
  

  

  ,J'3'g 
  , 
  g| 
  ?|o 
  

  

  Stronger 
  0-01 
  grm. 
  

  

  Stronger 
  0*03 
  " 
  

  

  Weaker 
  0-05 
  " 
  

  

  0-08 
  " 
  

  

  0-09 
  " 
  

  

  llo-io 
  " 
  

  

  < 
  '- 
  a 
  s^ 
  

   ® 
  5 
  &s 
  

   o-2p£ 
  

  

  I 
  CO 
  c 
  °3 
  

  

  Si*? 
  

  

  5-B 
  

  

  18 
  mm. 
  Weaker 
  I 
  10 
  

  

  ■ 
  Weaker, 
  j 
  108 
  

  

  Weaker 
  

   Weaker 
  109 
  

   Weaker 
  

   1 
  Like 
  i 
  i 
  

  

  cm. 
  3 
  * 
  - 
  23 
  mm. 
  

   " 
  jO-23 
  " 
  

  

  Weaker 
  

  

  Stronger 
  

   Weaker 
  

   Stronger 
  

   Like 
  

  

  Experiment 
  V. 
  

  

  Part 
  I. 
  

  

  Part 
  II. 
  

  

  Part 
  III. 
  

  

  o.2 
  

  

  O 
  

  

  ristic 
  

  

  sium 
  

  

  om- 
  

  

  rith 
  

  

  rd. 
  

  

  o| 
  

  

  

  

  1 
  ©__; 
  

  

  0.2 
  

  

  

  

  eristic 
  

  

  ssium 
  

  

  com- 
  

  

  with 
  

  

  ard. 
  

  

  

  

  0)»^?S 
  

  

  .£ 
  . 
  3 
  

  

  

  oCac 
  

  

  

  

  si 
  

  

  st|si 
  

  

  Stronger 
  

  

  NCI 
  

  

  100 
  cm 
  

  

  test-sol 
  

  

  

  Charact 
  

  

  of 
  sodiu 
  

   as 
  com 
  

   withsta 
  

  

  4=2 
  

  

  •alu 
  

  

  Charact 
  

  

  of 
  pota 
  

  

  line 
  as 
  

  

  pared 
  

  

  stand 
  

  

  40 
  cm, 
  3 
  

  

  0-23 
  mm. 
  

  

  0-025 
  grm. 
  

  

  0-18 
  mm 
  

  

  Weaker 
  

  

  160 
  cm. 
  3 
  

  

  0-23 
  mm. 
  

  

  Stronger 
  

  

  100 
  " 
  

  

  0-23 
  " 
  

  

  Stronger 
  

  

  0050 
  " 
  

  

  0-18 
  •' 
  

  

  Weaker 
  

  

  180 
  " 
  

  

  0-23 
  " 
  

  

  Stronger 
  

  

  160 
  " 
  

  

  0-23 
  " 
  

  

  Weaker 
  

  

  0-085 
  " 
  

  

  0-18 
  " 
  

  

  j 
  Weaker 
  

  

  190 
  " 
  

  

  0-23 
  " 
  

  

  Stronger 
  

  

  

  

  

  o-ioo 
  '• 
  

  

  0-18 
  " 
  

  

  J 
  Weaker 
  

  

  200 
  " 
  

  

  0-23 
  " 
  

  

  Stronge 
  

  

  

  

  1 
  

  

  0-110 
  " 
  

  

  0-18 
  " 
  

  

  1 
  Like 
  

  

  205 
  " 
  

   210 
  " 
  

  

  0-23 
  " 
  

   0-23 
  " 
  

  

  Weaker 
  r 
  

   Weaker 
  

  

  /205xC-0001 
  

   \ 
  200x00001 
  

  

  : 
  0-0205 
  ) 
  

  

  '■ 
  mean 
  .— 
  0-02025 
  

  

  0-0200 
  J 
  

  

  Potassium 
  found. 
  0-02025 
  grm. 
  

  

  " 
  taken 
  0-02000 
  " 
  

  

  Error 
  0-00025 
  " 
  

  

  Experiment 
  VI. 
  

  

  : 
  1*25 
  per 
  cent. 
  

  

  

  5~ 
  9+ 
  

  

  I 
  ^.3^ 
  x 
  

  

  

  Z 
  .9 
  o-c 
  

  

  100 
  

   110 
  

  

  0-23 
  mm. 
  Stronger 
  0-045 
  grm.f 
  018 
  mm. 
  Weaker 
  

   0-23 
  " 
  Stronger 
  0-082 
  '• 
  018 
  " 
  Like 
  

   0-23 
  " 
  Stronger 
  I 
  1 
  : 
  

   0-23 
  " 
  1 
  Like 
  

  

  

  Part 
  III. 
  

  

  

  3% 
  

  

  K. 
  CD 
  

  

  O 
  

  

  Characteristic 
  

   of 
  potassium 
  

   .line 
  as 
  com- 
  

   pared 
  with 
  

   standard. 
  

  

  110 
  cm. 
  3 
  

  

  120 
  " 
  

   130 
  " 
  

  

  0-23 
  mm. 
  

   023 
  " 
  

   023 
  " 
  

  

  Stronger 
  

  

  Stronger 
  

  

  Like 
  

  

  * 
  Originally 
  present. 
  

   (130x0-0001=0-0130) 
  

  

  Potassium 
  found 
  _ 
  0-0130 
  gram. 
  

  

  taken 
  0-0140 
  " 
  

  

  Error 
  0*0010 
  " 
  = 
  7 
  per 
  cent. 
  

  

  fThe 
  test-solution 
  having 
  been 
  accidentally 
  over-diluted, 
  its 
  strength 
  was 
  

   increased 
  by 
  the 
  addition 
  of 
  0-0010 
  grm. 
  of 
  potassium 
  and 
  this 
  amount 
  was 
  added 
  

   in 
  the 
  computation 
  below 
  to 
  that 
  originally 
  in 
  the 
  test-solution. 
  

   (109 
  x 
  0-0001 
  = 
  0-0109) 
  

  

  Potassium 
  found 
  .0-0109 
  grm. 
  

  

  " 
  taken 
  0-0110 
  " 
  

  

  Error 
  0-0001 
  " 
  = 
  0-9 
  per 
  cent. 
  

  

  