Elements of Qualitative And Quantitative Chemical Analysis
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NH,OH ppts. zinc hydroxide, Zn(OH) 2 , fiocculent, white, soluble in excess of precipitant, as (NHJ.jZnOa, re-pptd. on boiling as Zn(OH) 2 .
BaCOj does not ppt. this hydroxide, except from solutions of the sulphate.
§ 9i b.] Elements of Chemical Analysis. 99 54. Filtrate;. To a portion add acetic acid and then H 2 S. A white ppt., soluble in HC1 shows Zn.
55. Evaporate another/ small portion carefully to dryness in the platinum cup, and fuse the residue with a mixture of equal parts of Na 2 CO ...s and KNO s . A bluish-green color in, the fused mass shows Mn.
56. a. Phosphate was present and Zn or Mn are absent; add the remainder of filtrate 53 to filtrate 47 for the Ca group, remembering that Ba has already been .tested for be- fore the addition of BaC0 3 in 53 t».
t». Phosphate was present, and Zn and Mn also ; add to the remainder of filtrate 53 NH 4 C1, NH.OH and (NH 4 ) 2 S, warm and filter ; dispose of this filtrate as in a above.
ioo Elements of Chemical Analysis. [§ 92.
92. Notes on the.
What to read after Elements of Qualitative And Quantitative Chemical Analysis?
You can find similar books in the "Read Also" column, or choose other free books by George Chapman Caldwell to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
NH,OH ppts. zinc hydroxide, Zn(OH) 2 , fiocculent, white, soluble in excess of precipitant, as (NHJ.jZnOa, re-pptd. on boiling as Zn(OH) 2 .
BaCOj does not ppt. this hydroxide, except from solutions of the sulphate.
§ 9i b.] Elements of Chemical Analysis. 99 54. Filtrate;. To a portion add acetic acid and then H 2 S. A white ppt., soluble in HC1 shows Zn.
55. Evaporate another/ small portion carefully to dryness in the platinum cup, and fuse the residue with a mixture of equal parts of Na 2 CO ...s and KNO s . A bluish-green color in, the fused mass shows Mn.
56. a. Phosphate was present and Zn or Mn are absent; add the remainder of filtrate 53 to filtrate 47 for the Ca group, remembering that Ba has already been .tested for be- fore the addition of BaC0 3 in 53 t».
t». Phosphate was present, and Zn and Mn also ; add to the remainder of filtrate 53 NH 4 C1, NH.OH and (NH 4 ) 2 S, warm and filter ; dispose of this filtrate as in a above.
ioo Elements of Chemical Analysis. [§ 92.
92. Notes on the.
What to read after Elements of Qualitative And Quantitative Chemical Analysis?
You can find similar books in the "Read Also" column, or choose other free books by George Chapman Caldwell to read onlineMoreLess
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