You correctly cool the sublimation apparatus to room temperature but accidentall
ID: 820736 • Letter: Y
Question
You correctly cool the sublimation apparatus to room temperature but accidentally remove the vacuum before you remove the ice water in the cold finger. Which of the following are true?
1. The solid caffeine on the cold finger will sublimate.
2. The caffeine crystals could burn.
3. Water will condense on the cold finger.
4. The condensed water will dissolve the caffeine crystals.
Regarding possible water in the sublimation chamber, which of the following statements are true?
Any water in the sublimation chamber will dissolve the deposited caffeine crystals.
You could spill some water in the neoprene adapter, which will get sucked into the sublimation chamber by the vacuum.
The cold finger is filled with ice water, and therefore water can condense on the top portion of the cold finger and be sucked into the sublimation chamber by the vacuum.
Any water pulled into the sublimation chamber would immediately evaporate because it's under vacuum.
Any water in the sublimation chamber will dissolve the deposited caffeine crystals.
You could spill some water in the neoprene adapter, which will get sucked into the sublimation chamber by the vacuum.
The cold finger is filled with ice water, and therefore water can condense on the top portion of the cold finger and be sucked into the sublimation chamber by the vacuum.
Any water pulled into the sublimation chamber would immediately evaporate because it's under vacuum.
Explanation / Answer
answer 1 ) the correct options are
4) The condensed water will dissolve the caffeine crystals
answer 2)
1) Any water in the sublimation chamber will dissolve the deposited caffeine crystals
3) The cold finger is filled with ice water, and therefore water can condense on the top portion of the cold finger and be sucked into the sublimation chamber by the vacuum
4) Any water pulled into the sublimation chamber would immediately evaporate because it's under vacuum.
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