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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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buffet55 buffet55
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12 years ago

Can I also say that we use crystallization when we want to obtain something that decomposes on heating but we use evaporation to dryness anytime?
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rkdgh2002rkdgh2002
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12 years ago
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zzz
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12 years ago
additional details reply:   NO.   crys is often used to purify a substance.   with regard to the point about decomposition, most things soluble in water do not have a low decomp temp (meaning that method is not selected over crys to preserve the integrity of the molecule/substance.

in general_ a substance is evaporated to isolate it from the liquid in which it is dissolved.   crys is more of a technique to purify a compound.
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