Why is a clonical flask preferred to that of a beaker during volumetric analysis?
It is easy to swirl the mixture without spilling any (try swirling a beaker). In addition the wide bottom means you are hopefully only looking through a thin layer of solution to a white tile or sheet of paper under the flask making identification of the color change from the indicator easy to see. And finally the narrow neck slows te evaporation of volatile solvents. Oh and if you want to keep your coffee hot longer, use an emty liquid nitrogen flask, they are esentially a thermos mug!!
