Once the volumetric pipette is filled, it is imperative there are no entrapped air bubbles or detritus. At the top marking, the liquid will form a curve, since gravity pulls downward on the liquid most effectively at the center, whereas at the edges and touching the pipette, the liquid expe...
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Dip a bubble wand or straw into the mixture, slowly pull it out, wait a few seconds, and then blow. If you don't have a ready made "bubble wand", you can make your own bubble wand by cutting off the end of the bulb of a plastic pipet (移液管). Dip the cut end in the solu...
Briefly explain why it is essential that there be some solid Sr(IO_3)_2 present in the bulb of the reaction pipet when the equilibrated supernatant liquid is measured, prior to titration. Why is the titration curve nearly flat at ...
A volumetric pipette, also spelled pipet, is a carefully graduated, glass tube designed to suck up, to measure, and frequently, to transfer a quantity of liquid. Often, the volumetric pipette has a zero volume marking, below which marking the liquid is to be retained in the pipette, and ...