. Inorganic chemistry . rsts into flame on the addition of a drop or two of sulphuric acid. 596. Chloric acid, HCIO3 [old notation, CIO5], is not itselfa substance of particular interest. Its salts, however, are, andespecially the chlorate of potassium. This substance, which, as Inorganic Chemistry. igi well as nitre, is largely consumed in the preparation of lucifer-matches, is prepared by sending a current of chlorine througha solution of potash, KHO. The chlorine combines with theelements of the alkah, forming chloride of potassium withthe metal potassium, and with part of the oxygen to for
. Inorganic chemistry . rsts into flame on the addition of a drop or two of sulphuric acid. 596. Chloric acid, HCIO3 [old notation, CIO5], is not itselfa substance of particular interest. Its salts, however, are, andespecially the chlorate of potassium. This substance, which, as Inorganic Chemistry. igi well as nitre, is largely consumed in the preparation of lucifer-matches, is prepared by sending a current of chlorine througha solution of potash, KHO. The chlorine combines with theelements of the alkah, forming chloride of potassium withthe metal potassium, and with part of the oxygen to formchloric acid, which unites with undecomposed potass to formthe chlorate of potassium, KCIO3. 597. In this decomposition six atoms of chlorine act on fiveof potass, forming five atoms of chloride of potassium and oAeatom of chloric acid, which then unites with a sixth atom ofpotass, to form chlorate of potassium, KCIO3. Thus in symbols: 6 atoms of Potash. Ul K g. Cl K H; 5 atoms of Chlorine. ? Cl K h: Cl K «: Cl K g:. 5KC1 I atom KCIO, 598. In illustration of this process, the student may send acurrent of chlorine through a solution of caustic potash till itceases to turn reddened litmus-paper blue. If the liquid bethen gently concentrated by evaporation, it will, on cooling,deposit crystals which are the chlorate of potassium, further concentration, it will deposit a second set of are the more soluble chloride of potassium, KCl. 599. The process described is very tedious, and requires alarge amount of chlorine. The student may content himselfwith observing, that when a few drops of a strong solution ofpotass are added to a bottle filled with chlorine, and the vesselshaken, the yellow colour of the gas disappears in a few seconds,owing to its combiaation with the elements of the 192 Chemistry. 600. Hyperchloric, or, as it is also and more generally called,perchloric acid, HCIO4 [old notation, CIO7], is interestingfrom the large amou
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