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A Manual of Qualitative Chemical Analysis
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$ 22.19
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| Item Number |
1275367 |
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Item Description...
Product Description Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: 9. Potassium Ferrocyanid precipitates white Pb2Fe(CN)6. 2 Pb(N08)2 + K4Fe(CN)6 = Pb2Fe(CN)6 + 4 KN08. 10. Hydrochlorid Acid, or any soluble chlorid, precipitates white PbCl2. Pb(N03)2 + 2 HC1 = PbCl3 + 2 HN08. Easily soluble in boiling water, from which, unless the solution is too dilute, it will crystallize, on cooling, in long white needles. 11. Sulfuric Acid, or any soluble sulfate, precipitates white PbSO4. Pb(N03)2 + H2SO4 = PbS04 + 2 HN08. Easily soluble in ammonium tartrate or ammonium acetate. [Add tartaric or acetic acid, and then excess of NH4OH.] 12. Metallic Zinc will entirely precipitate the lead in crystalline form. Pb(N08)2 + Zn = Pb + Zn(N08)2. Note. The chemical equations have been given under Lead as a guide for the student. Such equations will generally be omitted, but the student should be required to write them for himself. SILVER, Ag' Silver dissolves easily in HNO3 with formation of AgNO3. Insoluble in HCl and in H2SO4. For the reactions use silver nitrate, AgNO3. 1. Sodium Hydroxid precipitates brown Ag2O. Insoluble in excess. Soluble in NH4OH, forming NH4AgO. 2. Ammonium Hydroxid precipitates the same. Very easily soluble in excess, forming NH4AgO. [For the formation of this precipitate dilute the NH4OH with 10 vols. of H2O, and use only one or two drops of the reagent.] If the silver solution is very acid no precipitate will be formed. 3. Sodium Carbonate precipitates light yellow Ag2CO3. Insoluble in excess. Soluble in NH4OH and in (NH4)2CO3. chapter{Section 44. Hydrogen or Ammonium Sulfid precipitates black Ag2S. Soluble in HNO3. Insoluble in NH4OH. 5. Acid Sodium Phosphate precipitates yellow Ag3PO4. Soluble in NH4OH and in HNO3. 6. Potassium Cyanid precipitates white AgCN. Soluble in excess, formin...
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Item Specifications...
Pages 146
Dimensions: Length: 9" Width: 6" Height: 0.34" Weight: 0.49 lbs.
Binding Softcover
Release Date Aug 16, 2009
ISBN 0217672043 EAN 9780217672047
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Availability 100 units. Availability accurate as of May 26, 2012 05:26.
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