Lecture Notes on Qualitative AnalysisG.P. Putnam's sons, 1907 - 53 pages |
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Common terms and phrases
acid salts acid solutions acidified added in excess AgCl alkaline Aq or HNO Aq precipitates As,S Ba Salts basic salts BaSO blue boiling carbonates chlorides color compounds cyanides decomposed deliquescent dilute acids dilute H₂SO dissolved evaporated filter filtrate flame formed gives GROUP H,NCI H,NCI+Aq H.NOH H₁NCI H₁NOH HCl+Aq heat Hg,Cl HNO3 hydrates ignition insolu insoluble in water insoluble salts liberates members of Gr mineral acids Na,CO NaOH neutral salts oxidize phosphates present reactions readily soluble reagent red brown residue salts are soluble salts H,SO salts insoluble salts of Gr Sb,O SbCl separation SnCl solu soluble in acids soluble in H,NOH soluble in H,NOH+Aq soluble in HCl soluble in NaOH+Aq soluble in solutions sparingly soluble SrSO strong acids strong H,SO substance sulphides tated tion uble in water water or acids yellow ନ ନ ନ
Popular passages
Page v - INTRODUCTION. QUALITATIVE ANALYSIS is that branch of chemistry which treats of the recognition of elements or their compounds. It...
Page 31 - Many substances are soluble in dilute acids, though insoluble in strong, many soluble only in strong, and again many, that are not attacked by dilute acids, are decomposed, though not dissolved, by stronger acids, so that solution can only be effected by treatment with strong acids and subsequent dilution.
Page 30 - ... soluble in cold water, are decomposed by boiling water into insoluble basic salts. Salts of Bi, and some salts of Sb, Hg and Hg, are thus decomposed even by cold water.
Page 41 - ... acetic acid and examine this solution for Ba, Sr, and Ca as directed under the Ba group. To the filtrate from the precipitate produced by H2SO4, or to the solution in which H2SO4 has failed to give a precipitate, add three times its volume of alcohol; Ca, if present, is precipitated as white...
Page 39 - The filtrate, which may contain the barium and potassium groups, must be concentrated by evaporation, filtered if necessary, and set aside.* The precipitate may contain MnS, ZnS, CoS, NiS, FeS, Al(OH)3, and Cr(OH)3 with phosphates or oxalates soluble in acids only. The color of the precipitate will give some indication of what is present.
Page 48 - It is often advisable to add CaCl2 + Aq to a fresh portion of the solution made slightly alkaline with H4NOH + Aq. The Ca salts of H3P04, H8BO» HSCSO4, HFand H2C4H4O, are thus precipitated ; CaSQ is not thrown down, if the solution is moderately dilute.
Page 25 - A solid must, if possible, be reduced to fine powder ; a portion of a liquid should be evaporated to dryness, and the residue, if any is left, powdered.
Page 31 - Treatment with Acids. For the solution of a substance insoluble in water HC1 + Aq, HNO, or a mixture of the two (aqua regia) is used.
Page 51 - To a solution of a bromide in a test tube add a little...
Page 33 - The three portions of any substance, that soluble in water, that soluble only in acids, and that insoluble in water and acids, must be separately examined.