12. It is sot advisable to use open flames in organic laberatories becase A1 Org

Question

12. It is sot advisable to use open flames in organic laberatories becase A1 Organic chemicals cannot withstand the high temperatares gemeraned by Bunsen burness B) Orpasie chemistry laboratory exercises usally call for the use of volatile, flanmable materials with low flash points C1Open fams ncrese the risk of lijary due to wceidental burs and related inints D) Only (B) and (C) 13. It is advisable to wark under the hood when hondling chemicals to A) Avoid breathing in the vapors of toxic or imitating chemicals B) To avoid the build up of hazardoss vapors which can spreed throughout the lab C) To free up bemch space or woek arca which cas be usod for non hazandous asthities D) All of these ert-butyl chloride from ters-buy 1a. Consider the following equation for he preparasion sen-butyl chloride thom teri aloohol H0 HC ert-butyl aloohol tert-butyl chloride The generally ascepted mechanism for this reaction s D) E2 15. The above reaction (in question 14) gave a 61%yield orproduct. Ifthe theoreti aly ield is 27.77 g How much product (enturyl chloride) was usually obtaned A)4,55 g 16. If the theoeetical yield is cakculated so 27.77 z in the above synthesis of ser-butyl chicride B) 1693 8 C)611g D) 0.16-8 (question 15) How much terr-butyl alcohol was used? A)22.23-g 27.C)11.44g 17. Acetanilide belosgs to which family of compounds? 29.99 g B) ketones C) amides D) None of these A) amines 189. Which of the following is NOT a drying apent for organic liquids? A) sodium sulfate B) sodium chlorideC) calcium chloride D) magnesium su A) sodium suilfate B) sodium chloride C) calcium chloride D) magnesium sulfane

Explanation / Answer

Q12

we avoid open flames in oganic labs, since many material are:

- Volatile

- flammable

therefore icnreases hazardous danger for accidents and flammables

choose B and C

Q13

we use the hood whenever some chemical vapors may exist, specially when we do not know the reagents/products being used. therefore, choose A, all of them

Q14

This must be substitution, since the OH group is substitude by CL group

then , SN1 or SN2

then, we know it is SN1, since the structure is not modified

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

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