The book Outline of Lecture Notes On General Chemistry was written by author Stoddard, John Tappan, 1852-1919 Here you can read free online of Outline of Lecture Notes On General Chemistry book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Outline of Lecture Notes On General Chemistry a good or bad book?
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--^^^ STRONTIUM. Sr'^87.2. Occurs as sulphate (celestine) and carbonate (stron- tianite). It is a yellow metal. Sp. gr. 2.5. Its Compounds closely resemble those of calcium. They are obtained both from celestine and strontia- nite. a. Celestine is heated with carbon and thus con- verted into sulphide : — SrS0,+2C = 2C0,+SrS ; which is then changed into hydroxide by the action of superheated steam :—SrS+2H,0=Sr(0H),+H,S; or into chloride, nitrate, etc. by the 'corresponding acid:— e. g. SrS+2HCl...=SrCl,+H,S. b. Strontianite gives the oxide on heating, and the salts may be obtained by the action of acids on this or on the. mineral itself. The most important strontium compounds are : — The hydroxide Sr(OH)„ which is used in sugar-mak- ing to extract the sugar from molasses ; and the ni- trate, which is used as a constituent of ** red fire." Strontium salts color the non-luminous flame a magnificent crimson. BARIUM. Ba"=137. Occurs chiefly as sulphate (heavy-spar) and carbo- nate (witherite).
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