. Sulphite waste liquor and its possible utilization ... hevelocity of the reaction at the higher is smaller than the velocityof the reaction taking place at the lower temperature, then the re-actions are not identical, since for a given reaction an elevation oftemperature results in an increase in velocity of reaction. The ideal way of performing an experiment to determine thevelocity of the reaction between sulphite waste liquor and alkaliat a temperature higher than room temperature, would be to heat 12 up the alkali solution and the waste liquor separately to the de-sired temperature and t
. Sulphite waste liquor and its possible utilization ... hevelocity of the reaction at the higher is smaller than the velocityof the reaction taking place at the lower temperature, then the re-actions are not identical, since for a given reaction an elevation oftemperature results in an increase in velocity of reaction. The ideal way of performing an experiment to determine thevelocity of the reaction between sulphite waste liquor and alkaliat a temperature higher than room temperature, would be to heat 12 up the alkali solution and the waste liquor separately to the de-sired temperature and then to mix the two. Samples for analysiscould be withdrawn from time to time. However, this procedurecould not be followed because when waste liquor is heated upseparately, a loss of S02 occurs. For this reason the experiment was carried out by heating upthe alkali solution and then adding the waste liquor to it. Thismethod had the disadvantage that the temperature is not uniformduring the course of the experiment, but rises from the minimum Z50 FIG. W. 10 20 30 40 50 Time in Minutes 60 and finally reaches a maximum. However, since at all times thetemperature is higher than room temperature, the same data, thoughnot exactly quantitative, would indicate a difference of , the experiment was carried out in this fashion. The apparatus used consisted of a 500 cc. short-necked round-bottom flask, equipped with a stopper, through which passed athermometer, reaching almost to the bottom, and a short piece oftubing serving as an air condenser to prevent excessive flask was immersed to about three-quarters of its volume in aboiling water bath. The samples for analysis were withdrawn bytemporarily removing the stopper and using a pipette. The 100 cc. of alkali solution were first placed in the flask andthe temperature allowed to reach the desired point. The 100 sulphite waste liquor were then added and the contents of theflask thoroughly mixed. Th
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectwoodpul, bookyear1922
