Explain what this spectrum tells the student In particular did a reaction occur

Explain what this spectrum tells the student in

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Explain what this spectrum tells the student. In particular, did a reaction occur? What should the student do to get ethyl bromide from ethanol? (Reagents and conditions)
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16. Give the reagents, solvents and other relevant conditions needed to convert the reactant to the product(s). a) Br OCH 2 CH 3 OCH 2 CH 3 CH 3 CH 2 OH heat + b) major product + Br CH 3 O - Na + MeOH heat
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17. For each of the following, determine whether it is a strong or weak nucleophile and a strong or weak base. H - - NH 2 (CH 3 ) 3 CO - CN - Cl - I - O - CH 3 OH N 3 - CH 3 O - - OH - SH HC C - 18. a) For the equation below, what effect does halving the concentration of methanol have on the rate? Cl + CH 3 OH + heat b) For the equation below, what effect does halving the concentration of sodium t-butoxide have on the rate? heat + Cl (CH 3 ) 3 CO - Na + t butyl alcohol 19. a) Of the compounds shown below, which would react most rapidly by an S N 1 mechanism, all other reaction conditions being equal? Cl Cl Cl Cl Cl b) Of the compounds shown below, which would react most rapidly by an S N 2 mechanism, all other reaction conditions being equal? Cl Cl Cl Cl
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20. Of the reactions shown, which one would occur most rapidly? Justify your choice. OH + NaCN DMF OCH 3 + NaCN DMF Cl + NaCN DMF O S O O CH 3 + NaCN DMF
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