Introduction to Practical Chemistry for Medical Dental And General Students S
Introduction to Practical Chemistry for Medical Dental And General Students S
A M Kellas
The book Introduction to Practical Chemistry for Medical Dental And General Students S was written by author A M Kellas Here you can read free online of Introduction to Practical Chemistry for Medical Dental And General Students S book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Introduction to Practical Chemistry for Medical Dental And General Students S a good or bad book?
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If Na 2 2 is not available, proceed as follows : (a) Boil up the residue with caustic soda. Filter. Acidify with HC1 and then add NH 4 OHAq and boil. White pp. Of A1(OH) 3 indicates aluminium. (b) Fuse up the residue with Na, C0 3 and KN0 3 on platinum foil or in a small iron spoon. Extract with water and TESTS FOR ELECTRO-POSITIVE RADICLES 161 filter. The solution will be yellowish if chromium be present. Acidify with acetic acid and add lead acetate. Yellow precipitate of PbCr0 4 indicates ch...romium. (b) Oxalates or Tartrates insoluble in water present. If oxalate or tartrate insoluble in water be indicated on heating a small quantity of dry substance, heat strongly about a gram of the substance until the organic compounds are completely de- composed ; dissolve the residue in dil. HC1 or dil. HN0 3 ; filter if necessary and proceed as usual through the groups. 162 TESTS FOR ELECTRO-POSITIVE RADICLES C. ANALYSIS OF A SOLUTION CONTAINING TWO OR MORE METALS BELONGING TO DIFFERENT ANALYTICAL GROUPS.
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