12. It is not advisable to use open flames in organ A) Organic chemicals cannot
ID: 695062 • Letter: 1
Question
12. It is not advisable to use open flames in organ A) Organic chemicals cannot widhstand the high temperasures sfve B) Organic chemistry laboratory exercises usually call with low flash points because D) Only (B) and (C) increase the risk of injury due to accidental burns and related iecidets 13. It is advisable to work under the hood when handling chemicals to A) Avoid breathing in the vapors of toxic or iritating chemicals B) To avoid the build up of hazardous vapors which can spread D) All of these pce or work area which can be used for non hazardous activities alcohol the following equation for the preparation tert-butyl chloride from HCI H, tert-butyl alcohol tert-butyl chloride generally accepted mechanism for this reaction is: A) SN1 B) SN2 C) E1 D) E2 yiel ld of product. If the theoretical is 27.77 g How much product (tert-butyl chloride) was actually obtained? A) 4.55 g 16. If the theoretical yield is calculated to 27.77 g in the above synthesis of tert-butyl chloride 15. The above reaction (in question 14) gave a 61% yie D) 0.169-g C)6.11 g B) 16.93 g (question 15). How much tert-butyl alcohol was used? A) 22.23-g 27.77g C) 11.44 g 17. Acetanilide belongs to which family of compounds? 29.99 g NH acetanilide D) None of these C) amides B) ketones A) amines 18. Which of the following is NOT a drying agent for organic liquids? A) sodium sulfate B) sodium chloride C) calcium chloride D) magnesium sulfateExplanation / Answer
Q12
we avoid open flames mainly beacause:
- Volatile material are present
- materials are flammable
therefore, we can have flammable accidents and also injuries
therefore
choose B and C
Q13
we use the hood in order to avoid:
- Gases/Vaprs of chemical in the lab
- avoid vapors concnetration in certain areas
- to have hazardous material handed in a special area
therefore
choose D, all of them
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.