Notes for students in chemistry : being a syllabus of chemistry compiled mainly from the manuals of Fownes-Watts, Miller, Wurz, and Schorlemmer / by Albert James Bernays.

  • Bernays, Albert James, 1823-1892.
Date:
1878
Catalogue details

Licence: Public Domain Mark

Credit: Notes for students in chemistry : being a syllabus of chemistry compiled mainly from the manuals of Fownes-Watts, Miller, Wurz, and Schorlemmer / by Albert James Bernays. Source: Wellcome Collection.

    59/168 (page 47)
    4CO + SCa. Chief constituent of soda-waste. When moist, absorbs O, and supplies calcium tiiiqsulphate, S,0(0,,Ca). Thus • 'SCa + 0H„ + 2O. = Ca(OH)„ + S,0(0,Ca). LCalcu m i-ENTA-suLi-uiDE S,Ca. By boiling with (OH),Ca, we obtain thiosul|.hate as well. Thus : 3[(0H),Ca] + (.fe, =jOll,+ S O(O.Ca) + 2S,Ca. Calcium phosphide FX»„J By dislillmg R,witiCaO. 7P. + i4CaO = 2[P.,030,Ca,] + 5P,Ca,.-CALCiUM siLiciDE SiCa„ ill lead-grey scales. By CIH into silicone or CHKYSEON Si„o',Ho.] Saltsof calcium: soluble m water. Chlo- KiDE CLCa/iOH.,, in striated, deliquescent prisms. Satiu-ated solution bods at r 79°-5 0. By heat at 150° C. into CLCa,20H„ ; porous, used for desiccating gases. Found m sea-water. Arti- iicially : COO.,Ca + 2CIH = OH^ + CO^ + CUCa. Absorbs H N [BuOMibE Br.,Ca. Iodide I,Ca.] Oxy-chloriue CLOCa, see p. 19. Chloride of lime. Evolves CL m air. Made from calcium hydroxide by absorption of CL. According to Kolb, CljO^HiiCaj by solution in water into: 2OH2 + Glfia + (OH)oCa -1- (UCl)..Ca.—Calcium chlorate (C10.)202Ca, deliquescent. Nitrate (NO.,).,0,Ca in deliquescent prisms. Calcium bi-carbonate COCOjCaj.COCOHjj, in Calcareous waters. Deposited as COO,Ca in so-called stalactites and stalag- mites. Temporiirdy hard waters contain it: softened by boiling or addition of Calcium hydroxide;—Clark's process. SuLPirATE S0,02Ca,20H2. Transparent, flattened prisms as Selenite. Kectangulur prisms as Anhydrite SOjCOoCa). Massive, Ibund as alabaster. Soluble in 400. Heated below 260° C, loses its water and forms gypsum or Plaster of Paris. Contained in all spring-waters. Calcium tetka- HYDUOXYL oktho-phosphate P20„(0 a)^(02Ca) is so-called super- phosphate when yet mixed with SOjCO^Ca) in manure. Used in making P,. Insoluble calcium salts. Calcium carbonate CO(OoCa)= CaCOj -- 100. As marble, limestone, ooli'e, chalk, &c. In coral, shells, &c. Dimorphous, rhomboliedral m Ice- laud spar and in 6-.sided right rhoml)ic prisms in Aragonite. CljCa + C0(()N'a)2 = 2ClNa'4- COO.,Ca. Calcium fluoride F2Ca. In cubes, octahedra and massive in fluorspar.'' Used for orna- ments, and for making FH and zFH.SiF, (pp. 23, 25) Cal- cium orthophospliate P20.,(02Ca)3 in bone-earth. Native as Apatite r2(Ja,;[P2O,,(O2Oi03.] Is precipitated by phospliates Ironi soluljle calcium .salts with 2OH2. [Sodium-calcium BORATE [2(iB0,ONa,O2Ca.)3B203,i80H.,], native at Iquique, Peru.] Calcium is precipitated quantitatively as oxalate G.X)./).,Ga, and weighed as carbonate GOiOfia,), which contains 56 per cent, of CaO. The spectrum ol' Ca is peculiar, containing a number of distinct bright lines.