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APPENDIX, 137 (14) The stand for holding the digestion flasks consists of a pan of sheet-iron 29 inches long by 8 inches wide, on the front of which is fastt:ned a shelf of sheet-iron as long as the pan, 5 inches wide and 4 inches high. In tliis are cut six holes i| inches in diameter. At the bacl< of the pan is a stout wire running lengthwise of the stand, 3 inches high, with a bend or depression opposite each hole in the shelf. The dijjestion flask rests with its lower part over a hole in tlie shelf and its neck in one of the depressions in the wire frame> which holds it securely in position. Heat is supplied by low Bunscn burners below the shelf With a Uttie care the naked Itanie can be applied directly to the flask without danger. THE DETERMINATION. One gram of the substance to be analyzed is brought into a digestion flask with npproximately 0.7 gram of mercuric oxide and 20 cc. of sulphuric acid. The flask is placed on the frame above de- scribed ill an inclined position and heated below the boiling point of the acid for from 5 to 15 minutes, or until froihuig has ceased. The heat i.'i then raised till the acid boils briskly. No further attention is required tiU the contents of the flask have become a clear liquid, whicli is colorless or at least has only a ver>' pale straw color. Th.; flask is then removed from the frame, held upright, and. while stil! hot, potassium permanganate is dropped in carefully and in small
APPENDIX. - . v«fi fnr comi)lute oxidiUion, and in view of the tional c.ses >. ;s ^H--^^' ^^ pissiam sulphide r.mo.es all mer- ^nc.n^»^^^-^y^^^^-J^^ the formation of mercuro- -0' '^°"^ "';: „d wlch .. .ot complcldy decomposed by ammonium compound. Mi'cn . ^,:y„s ^ise to an evolution of soda solution. '' '^ -''''^!^" ^^ ", .ij ,? Previous to use, the iwflmi^en and prevents violent bumping,'. ''^^"^ S;.rtially re
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THE STUDENTS' GUIDE Quantitative An
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-J O o p«5 O
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PREFACE. The plan oi the Students'
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vm LIST OP ANALVSES. ij. Guano. Ui(
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3j INTKODUCTOKV NOTES. The choice o
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Xli U'ORKS FOE REIEREN.CE ^KD FOR S
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j^ QUANTITATIVE ANALYSIS. the preci
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1^ QUANTITATfVE ANALYSIS, The secon
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iS (iLrANXri-ATIVE ANALYSI.-,, When
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2C QUANTITATIVE AKALYSIS. Rcactio>i
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22 QUANTITATIVE ANALYSIS. crucible,
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24 QUANTITATIVE ANAI^YSIS, these fl
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26 QUANTfTATIVE ANALYSIS. D— Dete
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2S QUANTITATIVE ANALYSIS. B. — De
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3° yaANTlTATlVE ANALYSIS.
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32 QUANTITATIVE ANALYSIS. crucible,
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34 QUANTITATIVE ANALYSTS. N.B.—Ma
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-5 QUANTITATIVE ANALVSIS. element w
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3$ a Bunsen burner ; QUANTITATIVE A
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VOLUMETRIC ANALYSIS. 4I solutions o
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ALKALIMETRV. 43 I-LjSO^ of sp. gr.
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finish with solution " No c,c. of N
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CHLORIMETRV. C Determine akohol by
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ILORIDE OF LIME. Valuation of Chlor
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TYPE METAL. ^t + « o " G ^t; « ti
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DETERMINATION OF 2IXC. E 53
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tf) ^ -I o a CHROMIC IRON OHtC. 55
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DETERMINATION OF ALKALIES. 57 which
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SOLUBLE SILICATES. 59 5
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-C o o '5 to 50 W) . is ^ w„ bo N
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TITANIPEtlOOS IRON ORE. 63
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-3 - /- '(C = r^ [jj J ,^ ^, w ^ "^
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NOTES TO THE PRECEDING SCHEME. 6f N
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In boilinc? NOTliS TO THE PRECEDING
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NOTES TO THE PRECBDISG SCHEME, Vonr
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NOTES TO THE PRECEDING SCHEME. 73 w
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PLIGHTS METHOD. 75 c n — r- t, a
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NOTES TO TIIIC PRKCEDING SCHEME. 77
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DETERMINATION OF TOTAL CARBON. 79 w
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I DETERMINATION OF TOTAL CAKOON. 8i
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DETEliMKNATlON OF SULPHUK, ETC. 83
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DETERMINATION OF IRON MANGANESE, ET
Page 86 and 87: .&. a o Ho a etts jr ^ ^ id o y i;
Page 88 and 89: 2-i B 1 d o". 3 + o o o o 0 -^ orr-
Page 90 and 91: POTABLE WATER. 9I E.—Calculation.
Page 92 and 93: POTABLE WATEK. 93 residue of NaCl+K
Page 94 and 95: L POTABLE WATER, 95 geii. To standa
Page 96 and 97: POTABLE WATER. 97 0.152 grains Na c
Page 98 and 99: SPECIFIC GRAVITIES OF SOLIDS AND LI
Page 100 and 101: OROANIC ANALYSIS. w'— F Sp. gr. =
Page 102 and 103: OKGANIC ANALYSIS. I03 (13) Sundry a
Page 104 and 105: BKTKRMINA'I'ION OF NITROGEN. los Of
Page 106 and 107: DETERMINATION OF NITROGEN. 107 D.
Page 108 and 109: ANALYSIS OF UlUNE. IO9 0.315 grms.
Page 110 and 111: ANALYSIS OF URINK. II I These subst
Page 112 and 113: ANALYSIS OF URINE. 113 2. Test witj
Page 114 and 115: ANALYSIS OF URINE. 11$ C. — Hcint
Page 116 and 117: DETERMINATION OF URINK. 117 filter
Page 118 and 119: DETERMINATION OF SUGAR, 119 A conve
Page 120 and 121: DETERMINATION OF GRAPE SUGAR. 121 T
Page 122 and 123: DISTILLATION OF PETROLEUM, i^t of a
Page 124 and 125: THE ELEMENTS, Naoie. Aluminium Anti
Page 126 and 127: Report of Analysis of Determination
Page 128 and 129: APPENDIX. 129 subsequently maintain
Page 130 and 131: APPENDIX. 131 excess, thus precipit
Page 132 and 133: APl'ENDfX. 133 METHOD FOR THE DETER
Page 134 and 135: APPENDIX, Battle and Daticy. of the
Page 138 and 139: APPENDIX, ,,,, k^ S iLosuiphite .«
Page 140 and 141: Aeidimcuy, 45- Albumen ( dctcrminnl
Page 142: Sulphoiic iicid in poLiblc watef, d
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