So, comparing separate hunks of dry ice, it follows that sublimation rates vary to the 2/3 power of the volume (or mass, since the density is constant) as long as the shapes are the same. The principal conclusions are: a) despite the use of several simplifying assumptions, the cylindrical model predicts the sublimation rates of. The larger block has 59% more surface area, and so will sublime at a rate that is 59% faster than the smaller block. The surface area of the larger block is 6 * (2 m³)^(2/3) = 9.52 m². The surface area of the smaller block is 6 * (1 m³)^(1/3) = 6 m². Pretend we have two cubic blocks of dry ice, one of which is 1 m³ in volume, and the other is 2 m³ in volume. Sublimation is the conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage. Credit: Wikimedia Commons, Creative Commons License. Sublimation is a surface phenomenon, so the rate will depend on the total surface area of the block of dry ice. A container holding dry ice (frozen carbon dioxide) sublimating into the air. and possibly the name of the book or website where you found the info, thanks! Question by racecar2daendofdastreet: How does the size of dry ice affect the speed of sublimation?Įverywhere i search i get information about the heat and how it affects sublimation, but i need to know about how the size affects it for my lab report.
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