Question

8. Which of the following characteristics is necessary to make a Dean-Stark trap work properly?

	A.	collected compounds must be miscible
	B.	collected compounds must be immiscible
	C.	collected compounds must have distinguishable boiling points
	D.	collected compounds must have distinguishable densities

9. How will unreacted alcohol be removed from the final reaction mixture? It will be separated from the ester product...

		during distillation
		during extraction when the reaction mixture is washed with DI water
		during extraction when the reaction mixture is washed with brine
		None of these methods is effective for separating unreacted alcohol from the ester product

10. How will unreacted acetic acid be removed from the final reaction mixture? It will be separated from the ester product...

		during distillation
		during extraction when the reaction mixture is washed with DI water
		during extraction when the reaction mixture is washed with brine
		None of these methods is effective for separating unreacted alcohol from the ester product

Answer 1

8) In the Dean-Stark trap collected compounds are separated based on their immiscibility property.

Hence answer is option B). collected compounds must be immiscible

9) I am assuming this question is based on esterification using a Dean-Stark trap.

During distillation alcohol remains in the reaction mixture and products like water and ester evaporates and are collected in the trap. Hence answer is option 1) During distillation.

10) Unreacted acid also remains in reaction mixture while distillation.

Hence Answer is option 1) during distillation.

Please note that I am assuming you these questions are on the experiment: Esterification based on the Dean-Stark trap.