. An introductory course of lessons and exercises in chemistry (rewritten 1919). .::- :v _T TT- .L~ T~- T14 H„£ feir -oQBcte ^rrnVi ^rte j—ii* fan ikb£ urarik & Iw : :-:_ .z_tl :_ til ftttt_:- >~Z. - lit tt-t -.:---? ttt-~li - --i - .-l_- vttl lt- ;;..-.; _i- - J- Mjit- L I :* 7-~ L TrTt. Chapter X 135 Art. 17. The mixture contains about gram-mols. HC1 per liter, andwith approximately 60% of this HC1 in the form of ions, the mixture con-tains — grams H> ion per liter. This concentration of H+ion is too great to permit the precipitation of CdS even, as
. An introductory course of lessons and exercises in chemistry (rewritten 1919). .::- :v _T TT- .L~ T~- T14 H„£ feir -oQBcte ^rrnVi ^rte j—ii* fan ikb£ urarik & Iw : :-:_ .z_tl :_ til ftttt_:- >~Z. - lit tt-t -.:---? ttt-~li - --i - .-l_- vttl lt- ;;..-.; _i- - J- Mjit- L I :* 7-~ L TrTt. Chapter X 135 Art. 17. The mixture contains about gram-mols. HC1 per liter, andwith approximately 60% of this HC1 in the form of ions, the mixture con-tains — grams H> ion per liter. This concentration of H+ion is too great to permit the precipitation of CdS even, as will be shownby the following trial: Put the mixture into a flask (preferably an Erlenmeyer flask of about300 capacity) which has been fitted with a one-hole rubber stopper(No. 5) and a short piece of narrow glass tubing which extends abouthalf-way to the bottom of the flask and which terminates in a fine open-ing (nozzle). This end should not extend into the liquid (see foot note). With the stopper resting loosely on top of the flask, let the H2S gasflow into the flask until most of the air in the flask has been displaced byH2S. Then fit the stopper into the neck, and shake the flask vigorouslyto bring the liquid into intimate contact with the H2S gas and thushasten the saturation of the liquid w
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectchemistry, bookyear19
