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lenharts lenharts
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11 years ago
the solid i am refering to is metamitron( a herbicide) , this decomposes  on heating..How to find its boiling point?? and wht is the vapour pressure of a solid? how to find it? and what does it signify? Please explain with definition the vapour pressure of a solid
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11 years ago
A substance will boil at a lower temperature if you do it under vacuum.  By getting the boiling point at different pressures, you can (reasonably) extrapolate the boiling point at standard pressure.
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#2
11 years ago
Solids do have vapour pressure the same as liquids  but it is usually so low that it is extremely hard to measure.  One example I found was that in the entire universe there is only one molecule of tungsten in a gaseous state at room temperature.  The main solids that have a significant vapour pressure are napthelene and dry ice. Ice will also sublimate but very slowly.  Under normal testing conditions if a solid decomposes when heated it will not have a boiling point.
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