Standard Methods of Chemical Analysis: A Manual of Analytical Methods and General Reference for the Analytical Chemist and for the Advanced Student, Volume 1
Wilfred Welday Scott
D. Van Nostrand Company, 1922 - Chemistry, Analytic - 1567 pages
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acetic acid acid solution acid sp.gr acidified added addition alcohol alkali alloy aluminum ammonia ammonium chloride ammonium hydroxide analysis antimony apparatus aqua regia arsenic assay barium beaker bismuth bromine burette calcium Chem chromium cobalt cold color concentrated cooled copper cupellation cyanide decomposed determined dilute dioxide dissolved distilled drop evaporated to dryness expel ferric ferrous filter paper filtrate flask fluoride fumes fusion gold gram gravimetric heated to boiling hot water hydrochloric acid hydrogen sulphide ignited insoluble iodine iridium iron lead liquid magnesium manganese mercury metallic method minutes mixture molybdate molybdenum neutral nickel nitric acid oxalate oxide permanganate peroxide phosphate phosphorus platinum portion potassium iodide precipitate present procedure reaction reagent reduced removed residue salt sample saturated selenium Separation silica silver nitrate sodium carbonate sodium hydroxide solu soluble solution containing standard steel sulphate sulphuric acid tellurium temperature thiosulphate tion titanium titrated treated tube volume volumetric washed weighed zinc
Page 708 - British thermal unit (Btu) = l/180partof the heat required to raise the temperature of one pound of water from 32° F.
Page 304 - ... through will vitiate the result by reacting with the excess of ferrous sulphate. As soon as the filtration and washing are completed, the ferrous sulphate should be added and the excess titrated with the permanganate solution, as the permanganic acid gradually decomposes on standing, and the warmer the solution the more rapid is the decomposition. At a temperature of 5° C. the solution will remain unaltered for several hours, but at 40° C. fifteen minutes will show an appreciable change. The...
Page 404 - After settling, decant the solution into a porcelain dish or hard glass beaker. Very small quantities of the sediment passing over will do no harm. Wash the insoluble residue onto a filter with hot water and continue the washing until free from chlorids, adding the washings to the original solution for evaporation. Oxidize the organic matter present in the solution with a few drops of nitric acid and evaporate to dryness on a water bath. Take up with hot water and a few cubic centimeters of hydrochloric...
Page 675 - ALLOWANCE FOR TEMPERATURE The coefficient of expansion for Ammonia Solutions, varying with the temperature, correction must be applied according to the following table: Corrections to be added for each degree below 60° F.
Page 581 - ... per cent lead acetate solution, and enough of a strong solution of ammonium acetate to neutralize the nitric acid present and substitute acetic acid for it. The object is to precipitate the vanadium as lead vanadate in an acetic acid solution. The ammonium acetate solution may be made by mixing 80 cc of strong ammonia, 100 cc of water, and 70 cc of acetic acid 99 per cent pure.
Page 709 - The specific gravity of a substance is the ratio of the weight of a given volume of that substance to the weight of an equal volume of another substance, whose specific gravity is assumed to be unity (1).
Page 280 - If the material dissolves in water, the water solution is treated with 5 cc. of concentrated hydrochloric acid and a few crystals of potassium chlorate and the liquor boiled.
Page 284 - B can be seen, thus preventing interference of light reflected from the vertical sides of the tubes A and B. A person looking through the eye-piece observes a single circular field divided vertically by an almost imperceptible line when the two solutions are of the same intensity. By manipulating the plunger D, the level of the liquid in B can be easily raised or lowered, thus causing the right half of the image to assume a darker or lighter shade at will. In matching colors with an ascending column...
Page 288 - C" is washed into a beaker and acidified with 20 cc. of nitric acid and 5 cc. of hydrochloric acid. The solution is evaporated to dryness on the steam bath. The residue is dissolved in 200 cc.
Page 323 - ... gram Water 1000 cc. VOLUMETRIC METHOD. The molybdenum sulphide precipitates and papers are treated in a 250 cc. beaker with 6 cc. of sulphuric acid and 10 cc. of nitric acid, and the liquid is boiled until strong fumes of sulphur trioxide are emitted. After allowing it to cool, 5 cc. of nitric acid are added, and the evaporation is repeated. The evaporation with 5 cc. portions of strong nitric acid is repeated several times, until the filter paper has been completely destroyed and all traces...