We have very strict requirements for the amount of caustic soda used,so we need to accurately measure its content after the production of caustic soda.And we also need to determine the content of the product itself before using it.
Firstly,before measuring caustic soda,we need to know the principle behind our measurement?When conducting measurements,barium chloride should be added to the product solution to be measured.Then convert the sodium carbonate and other components into barium carbonate precipitate for use,and add phenolphthalein to the equipment.At this point,the solution will change color,and then hydrochloric acid will be added to it until the solution returns to a transparent color.This is the measurement result.
Tablet alkali
When conducting measurements,the first step is to prepare a dry and clean weighing bottle.Then,remove a certain amount of caustic soda from the prepared sample and dissolve it in a certain amount of water.The weighing bottle needs to be rinsed at night,and the liquid after rinsing also needs to be added.Stir the added substance thoroughly until it is completely dissolved,then slowly cool it to room temperature and add phenolphthalein indicator dropwise.Stir evenly and slowly add hydrochloric acid to it.Record the amount added,and then calculate the content of the product itself according to the formula.
The above is a relatively simple method for determining the content introduced by the editor,because caustic soda also contains some impurities when used,and the weight of the product after removing impurities is what we need,because this can ensure sufficient reaction during the reaction.
