The absorption spectra of solutions of certain salts of cobalt, nickel, copper, iron, chromium, neodymium, praseodymium, and erbium in water, methyl alcohol, ethyl alcohol, and acetone, and in mixtures of water with the other solvents
288 pages
English

The absorption spectra of solutions of certain salts of cobalt, nickel, copper, iron, chromium, neodymium, praseodymium, and erbium in water, methyl alcohol, ethyl alcohol, and acetone, and in mixtures of water with the other solvents

Le téléchargement nécessite un accès à la bibliothèque YouScribe
Tout savoir sur nos offres
288 pages
English
Le téléchargement nécessite un accès à la bibliothèque YouScribe
Tout savoir sur nos offres

Description

LIBRARY OF UNIVERSITY CRUZSANT/V J^M^ -^Ci^.fi'"? J77 Digitized by the Internet Archive in 2007 with funding from IVIicrosoft Corporation http://www.archive.org/details/absorpspectraOOjonerich THE ABSORPTION SPECTRA OF SOLUTIONS OF CERTAIN SALTS OF COBALT, NICKEL, COPPER, IRON, CHROMIUM, NEODYMIUM, PRASEODYMIUM, AND ERBIUM IN WATER, METHYL ALCOHOL, ETHYL ALCOHOL, AND ACETONE, AND IN MIXTURES OF WATER WITH THE OTHER SOLVENTS BY HAEEY G. JONES and JOHN A. ANDEESON UNIVERSITY^ ^A. 0CT25 lg09^1I* WASHINGTON, D. C. Published by the Carnegie Institution op Washington 1909 CAENEGIE INSTITUTION OF WASHINGTON Publication No. 110 B. LIPPmCOTT COMPANYPRESS OF J. PHILADELPHIA QC 431 PREFACE. This investigation, which is a continuation of the work of Jones and Uhler on the absorption spectra of solutions (Carnegie Publication No. 60), was carried out with the aid of a Grant generously awarded by the Carnegie Institution. Salts of the following metals were brought within its scope: Cobalt, nickel, copper, iron, chromium, neodymium, praseodymium, and erbium; and about 1,200 solutions were studied. Spectrograms of salts of these metals in water, varying the concen- tration but keeping the total amount of coloring matter in the path of the beam of light constant, were obtained. In a similar manner spectrograms were made, keeping the total number of molecules in the path of the beam ofof light constant.

Sujets

Informations

Publié par
Nombre de lectures 55
Licence :
Langue English
Poids de l'ouvrage 10 Mo

Extrait

LIBRARY
OF
UNIVERSITY
CRUZSANT/V
J^M^-^Ci^.fi'"?
J77Digitized by the Internet Archive
in 2007 with funding from
IVIicrosoft Corporation
http://www.archive.org/details/absorpspectraOOjonerichTHE ABSORPTION SPECTRA OF SOLUTIONS
OF
CERTAIN SALTS OF COBALT, NICKEL, COPPER, IRON, CHROMIUM, NEODYMIUM,
PRASEODYMIUM, AND ERBIUM IN WATER, METHYL ALCOHOL,
ETHYL ALCOHOL, AND ACETONE, AND IN MIXTURES
OF WATER WITH THE OTHER SOLVENTS
BY
HAEEY G. JONES and JOHN A. ANDEESON
UNIVERSITY^ ^A.
0CT25 lg09^1I*
WASHINGTON, D. C.
Published by the Carnegie Institution op Washington
1909CAENEGIE INSTITUTION OF WASHINGTON
Publication No. 110
B. LIPPmCOTT COMPANYPRESS OF J.
PHILADELPHIAQC
431
PREFACE.
This investigation, which is a continuation of the work of Jones and
Uhler on the absorption spectra of solutions (Carnegie Publication No. 60),
was carried out with the aid of a Grant generously awarded by the Carnegie
Institution. Salts of the following metals were brought within its scope:
Cobalt, nickel, copper, iron, chromium, neodymium, praseodymium, and
erbium; and about 1,200 solutions were studied.
Spectrograms of salts of these metals in water, varying the concen-
tration but keeping the total amount of coloring matter in the path of the
beam of light constant, were obtained. In a similar manner spectrograms
were made, keeping the total number of molecules in the path of the beam
ofof light constant. The effect such dehydrating agents as calcium chloride
on inand aluminium chloride, absorption solution, was also studied.
large number of salts were rendered anhydrous and dissolved inA
alcohol, ethyl alcohol, and acetone. The concentration of the solu-methyl
in solvents varied, amount of coloring mattertions these was but the total
in of the light was Finally, was added tothe path kept constant. water
non-aqueous and on absorption determined.the solutions, its effect
Perhaps the most striking result was obtained with anhydrous neodym-
ium chloride in alcoholic solutions, which small, increasing amounts ofto
water were added. Here entirely new bands appeared on the addition of a
small amount of water.
An ample supply of the salts of neodymium and praseodymium was
furnished us with their characteristic liberality by the Welsbach Light
Company, and our thanks are especially due to their chemist, Dr. H. S.
Miner.
We accept this opportunity to extend our thanks to Prof. J. S. Ames,
who has placed at our disposal ideal conditions under which this inves-the
tigation was carried out.
Harry C. Jones.
mCONTENTS.
CHAPTER I. PAQB
Introductory 1
Apparatus 6
Photographic Material, etc 7
Sources of Light 8
Making a Spectrogram 9
CHAPTER II.
Salts op Cobalt 11
Cobalt Chloride in Water—Beer's Law 13 in—Number of Ions in the Path of the Beam of Light
Constant 16
Cobalt Chloride in Water—Molecules Constant 15 in Methyl Alcohol—Beer's Law 16
Cobalt Chloride in Ethyl Alcohol—Beer's Law 17 in Acetone—Beer's Law 18
Cobalt Chloride in Methyl Alcohol with Water 19 in Ethyl with 20
Cobalt Chloride in Acetone with Water 21 Bromide in Water—Beer's Law 22
Cobalt in—Molecules Constant 22
Cobalt Bromide with Calcium Bromide 23
Cobalt in Methyl Alcohol—Beer's Law 25 Bromide in Ethyl—Law 25
Cobalt in Acetone—Beer's Law 26 Bromide in Methyl Alcohol with Water 27
Cobalt in Ethyl with 27 Bromide in Acetone withWater 28
Cobalt Nitrate in Water—Beer's Law 29
Cobalt in—Molecules Constant 30 Sulphate in Water—Beer's Law 31
Cobalt Sulphocyanate in Water—Beer's Law 32 in—Molecules Constant 33
Cobalt Acetate in Water—Beer's Law 34
General Summary of Results with Cobalt Salts 35
CHAPTER III.
Samts op Nickel 39
Nickel Chloride in Water—Beer's Law 39 in—Ions Constant 40
Nickel Chloride in Water—Molecules Constant 41 in with Calcium and Alimiinium Chlorides 41
Nickel Sulphate in Water—Beer's Law 42 Acetate in— Law 43
CHAPTER IV.
Salts of Copper 46
WaterCopper Chloride in —Beer's Law 46 in—Molecules Constant 46
in Methyl AlcoholCopper Chloride —Beer'sLaw 46
in Ethyl — Law 47
in —Copper Chloride Acetone Beer's Law 48
VCONTENTS.VI
CHAPTER IV. Sai/ts Copper.—Continued. pageop
Copper Chloride in Methyl Alcohol with Water 49 in Ethyl with 50
Copper Chloride in Acetone with Water 60 Bromide in Water—Beer's Law 51
Copper in—Molecules Constant 52 Bromide in Methyl Alcohol—Beer's Law 62
Copper Bromide in Ethyl— Law 53
Copper Bromide in Methyl Alcohol with Water 64 in Ethyl with 64
Copper Nitrate in Water— Law 55Beer's in—^MoleculesConstant 56
CHAPTER V.
Sai/tsof Iron 59
Ferric Chloride in Water—Beer's Law 59 in—^Molecules Constant 59
Ferric Chloride with Calcium Chloride 60 with Aluminium 60
Ferric Chloride in Methyl Alcohol—Beer's Law 61 in Ethyl— Law 61
Ferric Chloride in Acetone—Beer'sLaw 62
CHAPTER VI.
Salts of CHROMixna 63
Chromium Chloride inWater—Beer's Law 64
Chromiimi in—Molecules Constant 65
Chromiiun Chloride with Calcium Chloride and Aluminium Chloride 65
Chromium Nitrate in Water—Beer'sLaw 66 in 67—Molecules Constant
CHAPTER VII.
Salts of Neodymium, Praseodymium, 68and Erbium
Preparation of Anhydrous Salts 71
Neodymiiun Chloride in 72Water—Beer's Law
Neodymium — 76in ^Molecules Constant with AliuniniumChloride in Water with Calcium Chloride and
Chloride 77
Neodymium Chloride in Methyl Alcohol—Beer's Law 77 in Ethyl— Law 78 Chloride in Mixtures of Methyl Alcohol andWater 79
Neodymium in Ethyl Alcohol with Water 83
84 Chloride—Anhydrous Bromide in Water—Beer's Law 86
Neodymium Nitrate in— Law 87
Neodymium 91Nitrate in Water—Molecules Constant
Neodjmaium in Methyl Alcohol—Beer'sLaw 91 Nitrate 92in Ethyl— Law
Neodymium in 92Acetone—Beer's Law Nitrate in Mixtures of Methyl Alcohol andWater 93 94 in of Acetone and Water
Praseodymium 94Chloride in Water—Beer's Law
Praseodymium 95 in Mixtures of the Alcohols and Water
Praseodymium 96Nitrate in Water—Beer's Law
Erbium 97Chloride in Water—Beer's Law
Erbiiim 97Nitrate in— Law
CHAPTER VIII.
Summary and 100Conclusions

  • Univers Univers
  • Ebooks Ebooks
  • Livres audio Livres audio
  • Presse Presse
  • Podcasts Podcasts
  • BD BD
  • Documents Documents