These are flashcards an notes made by students on topics like 'ripening', 'ostwald' and 're-cooling', originating from:

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- Wageningen University
ISBN-13 9990002019708
665 Flashcards & Notes
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Study Cards on ripening, ostwald, re-cooling

How is the stability of a crystal related to the size?
A larger crystal is more stable than a small crystal.
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When does disproportion of crystals take place?
When the temperature is constant. You will see a slow, but steady growth of the average crystal size, and a widening of the size distribution. This is called Ostwald ripening. The total amount of crystallinity remains the same.
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What is migratory re-crystallization?
It is disproportionation that takes place due to time differences. During a time of warming, mostly the small crystal melt. During re-cooling, the ice will mostly form on the larger crystals. After repeating this a few times, a faster Ostwald ripening takes place.
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