19. What is thin layer chromatography (TLC) LEAST useful for from the list below? A) To determine if crystallization or distillation may be more effective for a separation B) To determine the number of components in a mixture C) To determine the appropriate solvent for column- chromatographic separation D) To monitor the progress of an organic synthesis reaction

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19. What is thin layer chromatography (TLC) LEAST
useful for from the list below?
A) To determine if crystallization or distillation may be
more effective for a separation
B) To determine the number of components in a mixture
C) To determine the appropriate solvent for column-
chromatographic separation
D) To monitor the progress of an organic synthesis
reaction
14. The solubility of salicylic acid in water is 7.8g/100ml
at 100°C and 0.25g/100ml at 25°. Estimate how much
water is needed to recrystallize a 19g sample of
salicylic acid?
A) 150ml B) 250ml
C) 300ml D) 400ml
Transcribed Image Text:19. What is thin layer chromatography (TLC) LEAST useful for from the list below? A) To determine if crystallization or distillation may be more effective for a separation B) To determine the number of components in a mixture C) To determine the appropriate solvent for column- chromatographic separation D) To monitor the progress of an organic synthesis reaction 14. The solubility of salicylic acid in water is 7.8g/100ml at 100°C and 0.25g/100ml at 25°. Estimate how much water is needed to recrystallize a 19g sample of salicylic acid? A) 150ml B) 250ml C) 300ml D) 400ml
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