I need help on problem #39... along with picking which structure will react whic

Question

I need help on problem #39... along with picking which structure will react which HBr more rapidly, would you be able to provide an explantion of why as well? Thank you in advance.

5:45 PM o 71% oo Verizon K Back 20170228 103305 jpg Problems following P res resonance contributo compounds? CH2CH and CH CHCH CH,CHCH CHCH and CHIC CH,CH CHCHCH 2 and CH CH CHCI CH ance contributors for the following carbocations: what product is formed when benzene reacts with each of the following reagents? a CH CHC AICI b. CH CHCH CI AICI c. CHJCCI AICI3. raw all the products of the following reaction: HOT For each of the statements in Column I choose a substituent from Column ll that fits the description for a substituent cz) attache a benzene ring: Column I Column a. Z donates electrons inductively, but does not donate or withdraw electron by resonance. OH b. Z withdraws electrons inductively and withdraws clectrons by resonance. e. Zwithdraws electrons inductively and donates cl cctrons by resonance, but is better at withdrawing inductively *NH3 d. Zwithdraws electrons inductively and donates electrons by resonance, but is better at donating by resonance. CH2CH e, Z withdraws electrons inductively. but does not donate or withdraw electrons by resonance. Which of the compounds in each of the following pairs is more acidic? COOH COOH OOH OCH CH Which of the following compounds will react with HBr more rapidly? CH CH2 CH CH2 or CH30 CH which compound would you expect to have the greater heat of hydrogenation, 1.2-pentadiene or 1.4-pentadiene? Which of the following species are aromatic? Courses Calendar Do Notifications Messages

Explanation / Answer

HBR --> H+ and Br-

Bromine is "bulky" grop

also note that

The oxygen is electornegative... meaning it will not favour Br- going near to it (negative and negative repulsion)

so

Best option is the one in the left

Which is much better group for Bromine bodning

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