Chemical News and Journal of Industrial Science, Tomy 101-102Chemical news office., 1910 |
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Strona 3
... concentrated hydrochloric acid to dissolve the iron sulphide formed ; after filtering and washing he obtained the pure acids . Rose removed the iron in the same way as Marignac . But this method of separating iron involves the wastage ...
... concentrated hydrochloric acid to dissolve the iron sulphide formed ; after filtering and washing he obtained the pure acids . Rose removed the iron in the same way as Marignac . But this method of separating iron involves the wastage ...
Strona 4
... concentrated , beautiful very silky- looking asbestos - like threads are formed ; these dissolve both in oxalic acid and in water . They are double com- pounds of niobic or tantalic acid with oxalic acid ; on evaporating an acid earth ...
... concentrated , beautiful very silky- looking asbestos - like threads are formed ; these dissolve both in oxalic acid and in water . They are double com- pounds of niobic or tantalic acid with oxalic acid ; on evaporating an acid earth ...
Strona 7
... concentrated sulphuric acid and 95 cc . of water . The reduction was carried on at a slow - boiling temperature in an Erlenmeyer flask , the mouth of which was closed with a cork through which a small funnel passed . In some cases 2 cc ...
... concentrated sulphuric acid and 95 cc . of water . The reduction was carried on at a slow - boiling temperature in an Erlenmeyer flask , the mouth of which was closed with a cork through which a small funnel passed . In some cases 2 cc ...
Strona 8
... concentrated sulphuric acid were added . The spiral was dropped in , the solution heated to boiling over the naked flame , and then immersed in a bath of boiling water . The tube was covered with a watch - glass . Reduction began at ...
... concentrated sulphuric acid were added . The spiral was dropped in , the solution heated to boiling over the naked flame , and then immersed in a bath of boiling water . The tube was covered with a watch - glass . Reduction began at ...
Strona 16
... concentrated sulphuric acid , the solution remains quite clear when poured into the same volume of water , and only begins to get turbid after boiling for a quarter of an hour . Niobic acid also dissolves in hot concentrated sulphuric ...
... concentrated sulphuric acid , the solution remains quite clear when poured into the same volume of water , and only begins to get turbid after boiling for a quarter of an hour . Niobic acid also dissolves in hot concentrated sulphuric ...
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acetic acid action alcohol alkaline aluminium ammonia ammonium amount analysis apparatus atomic weight B.Sc barium boiling bromide calcium calculated carbon dioxide cent Chem chemical Chemistry chemists chloride colour comet compounds concentrated condensation containing copper crystalline D.Sc decomposed derivatives determination dilute dissolved distilled ether ethyl evaporated excess experiments filter filtrate flask formed formula gives gold grms heated hydrochloric acid hydrogen hydroxide invertase iodide iodine iron J. J. Thomson ketone liquid melting metal method mgrms mineral mixture molecular molecules muriatic niobic nitrate nitric acid obtained oxide oxidised oxygen paper perchloric acid permanganate phosphorus platinum potassium precipitate prepared present Prof pure quantity reaction reduced residue salt sample scandium silver phosphate Society sodium sodium carbonate soluble substance sugar sulphate sulphide sulphuric acid tantalic acid tantalum telluride tellurium temperature theory tion titanic acid titanium tube vanadium vapour washed ytterbium zinc