clickers_CH10_organohalides

clickers_CH10_organohalides - Which of the following is not...

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Which of the following is not a redox reaction? 1. x 2. x 3. x 4. x 5. x HCl Cl Br 2 Br Br H 2 Pd NBS H 2 O/DMSO OH Br HO 1. OsO 4 2. NaHSO 3 /H 2 O OH
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Answer 1. HCl Cl
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Which mechanistic step decides the regiochemistry of the radical-chain chlorination of 2-methylpropane? 1. protonation step 2. hydrogen abstraction step 3. chlorine abstraction step 4. chloride addition step 5. initiation step
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Answer 2. hydrogen abstraction step
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Dipole moments of CH 3 –X are 1.85, 1.87, 1.81, and 1.62 D for F, Cl, Br, and I, respectively. What is the best explanation of the small differences in dipole moments? 1. The electronegativity of halogens in alkyl halides is nearly constant. 2. The inductive effects are counterbalanced by hyperconjugation. 3. The electronegativity effects are counterbalanced by bond strengths. 4. Lone-electron pairs are more delocalized on smaller halogens. 5. The charge-separation and bond-lengths trends have opposite effects.
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Answer 5. The charge-separation and bond- lengths trends have opposite effects.
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Which of the following is not the product of a radical chain-reaction of 2-pentene with NBS?
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clickers_CH10_organohalides - Which of the following is not...

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