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When doing sublimation, what effect does the ice breaker on top of the Petri dish, have,...

When doing sublimation, what effect does the ice breaker on top of the Petri dish, have, if any, on the sublimation process (any effect on vapor pressure)? Would the ice bath affect the compound’s vapor pressure? Don’t think so, but just curious

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Answer #1

The role of ice beaker on top of the Petri dish is to cool the innoculated Mannitol Salt Agar (MSA) type substances placed in the petri dish, which require to be kept at low temperatures. The ice beaker in ideal situation would have negligible effect on the vapour pressure of the compound as it does not come in direct contact with the compound to be sublimated.

For reference see the following image:

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