9. Raschig rings were added to thein fractional distillation in order to West co

Question

9. Raschig rings were added to thein fractional distillation in order to West condenser, prevent the liquid from bumping entered the condenser. plates condenser a. b. Claisen adapter, increase the rate at which the vapors c. Hempel column, increase the number of theoretical d. West condenser, increase the surface area inside the e. none of the above 10. Which of the following rate laws accurately describes the rate determining step in an El elimination? a. Rate k[oxonium ion] b. Rate k[oxonium ion][alcohol] c. Rate k[carbocation] d. Rate k[carbocation][water] e. none of the above I1. Which of the following molecules would show the most intense signal for the alkyne vibration around 2200 cm a. 2-butyne b. diphenylacetylene c. PhCH C N d. propyn-1-ol What is the role of NaBr in the SN2 reaction of 1-butanol with NaBr in acid during lab 7? 12. a. Nucleophile b. drying agent c. solvent d. base e. none of the above

Explanation / Answer

Answer:

9.

Reaching ring were added to the west condenser in fractional distillation in order to prevent the liquid from bumping.

Hence, option (a) is correct.

10.

The rate law accurately describes the rate determining step in E1 elimination is: Rate=k[carbocation]

Hence, option(C) is correct.

11.

2 b-butyne would show the most intense signal for the alkyne vibration around 2200 cm-¹.

Hence,option ( a) is correct.

12.

NaBr acts as Nucleophile in the SN reaction of 1- butanol with Nabr in acid during lab 7.

Hence, option (a) is correct answer.

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