Pregunta:
Describe how to make up a standard solution
Autor: Marilyn Bob-Manuel 3ektRespuesta:
Calculate the quantity of solute required by using n=cV and n=m/gfm weigh out the solute by difference using an electronic balance and transfer the solid to a beaker or conical flask dissolve the solute in a small volume of water, smaller than the final volume to be made up. transfer the the solution quantitatively using a filter funnel to a volumetric flask of the required size. add water to the volumetric flask so that it is approximately 1cm below the mark on the neck of the standard flask, and make it up to the mark with a dropper so that the meniscus sits on the mark stopper the flask and invert it to mix.
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