Benzoic acid is in the process of being recrystallized. Your lab partner is in a hurry and after the impure benzoic acid is dissolved, they quickly submerge the flask in an ice bath and see crystals. Besides possibly breaking the flask, what would be the problem with this technique

Question

01-09-2020
Chemistry

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Benzoic acid is in the process of being recrystallized. Your lab partner is in a hurry and after the impure benzoic acid is dissolved, they quickly submerge the flask in an ice bath and see crystals. Besides possibly breaking the flask, what would be the problem with this technique

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pstnonsonjoku pstnonsonjoku · Answer 1 · 2020-09-10T05:55:02+02:00

Answer:

Impurities will be trapped in the crystals of the benzoic acid crystallized in this manner.

Explanation:

After benzoic acid is dissolved in hot water, it should have been allowed to cool gradually before it is transferred into an ice bath.

This gradual cooling will aid the separation of impurities so that when the vessel is now submerged in an ice bath, only pure benzoic acid is recrystalized.

If the vessel is immediately submerged into an ice bath, impurities will be trapped in the crystals of the benzoic acid.