Chrome File Edit View History Bookmarks People Window Help 4) 878%-, Sun 5:15 PM

Question

Chrome File Edit View History Bookmarks People Window Help 4) 878%-, Sun 5:15 PM 9 :E puntlandi com l i x R (15) saed kaylie x i Saed Kaylie, 17 f X V * Al-Ahqaf 46:23 x online quiz-CHI x Review Test Subm x e Home l Chegg co x G (1) Heat the meth X f https://courses.cscc.edu/webapps/assessment/review/review.jsp?attempt id 17643 101-1&course; d 108901 1&content; id 7404321 1&outcome; id 1689 ABP ime Elapse minu ours Prelab Excercises Links Handouts Practice Problems Online quiz Question 1 0 out of 5.5 points A student ran the following reaction and after completing the work up step, extracted the product into diethyl ether (2x10 mL). Select the correct steps for this extraction. OH 1. NaBH4 2. H+, H2 H3C H2C Question 2 2 out of 2 points After extracting a product into diethyl ether you are told to dry the solution of extracted product using sodium sulfate drying agent. How do you know you have added enough drying agent? Question 3 0 out of 4 points A student ran the following reaction and chose to purify the crude product by recrystallization with methanol. Which of the following selections gives the correct steps for this in the correct order? OH 1. NaBH4 au

Explanation / Answer

1) Product was taken in 2 neck RB flask and added minimum quantity of methanol.

2) RB was heated to 60° C under the assembly of reflux condenser.

3) Methanol was added in such a rate that no solid seen in the solvent at hot temperature and stop addition of methanol.

4) Mixture was refluxed for 30 min and filtered hot.

5) Filtrate was kept a aside to cool and wait to form the crystals in it.

6) After specific time say 24 h, generated solid was filtered and washed with very cold methanol.

7) Solid was dried well to get pure crystalline product.

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.