Question

eeWs Page 2 Identify the nucleophile in the following reaction. ROH H, 0+x O o Pas 2 HO+ RX a. X b. н,о° c. ROH d. H,o e. RX eoulav olmaneboseds pietren fom c.er Ho 6. Which free radical is most stable relative to the hydrocarbon from which it is formed? a. CH, CH, CH, b. (сн, ), сн- с. (сH, ), С. d. CH-CH lon fom ayd beoubozg ed neolaoibe o nonudacoqm dpld o oa e. CH2-CHCHCH3 Which of the following gas-phase reactions is a possible chain- terminating step in the light-initiated chlorination of methane? a. Cl-ci b. Cl. CH c. CH, +CH3. > d. CH,. +Cl-ci e. More than one of these 2C1. E S bas I.h CH3 +H-Ci сH, -сн, CH, Ci Cl EbnsS 8. For which of the following gas-phase reactions would the Ect be equal to aH ? a. Cl-ci b. 2 cl c. Cl. CH d. CH,. +CH, e. CH, + Cl-ci- wofed buts solspss eda 20 doir -> 2C1. -> Cl-ci CH +CH -> CH3 +H-C1 -> сн, — сн, CH3C1C1. oteds o LIA palwollo odd to dot SH 9. A chain reaction is one that: a. involves a series of steps. b. involves two steps of equal activation energy. c. can be initiated by light. d. involves a series of steps, each of which generates a reactive intermediate that brings about the next step. e. involves free radicals that have an unusual stability and thereby cause a large quantum yield. CH CHCH CH CH CH'CRCECH

Answer 1

5. a. H₂O is the nucleophile

6. c. (CH₃)₃C^. is the most stable

7. c. A chain terminating step must result in the combination of two free radicals to for a covaklent compound

8. a. Cl-Cl $\rightarrow$ Cl + Cl

9. d. involves a series of steps, each of which generates a reactive intermediate that brings about the next step