4. a) The hydrogens labeled in the structure below have different acidities. Assign the correct hydrogen to the following pKa values. (i) pKa=16 (ii) (iii) (iv) pKa=26 pKa=45 pKa=62 A α α b) Circle the hydrocarbon that would have the lowest heat of hydrogenation. 2 B H H Br H H X x c) Rank the following alkyl halide in order of increasing reactivity in an SÃ1 mechanism 1 being the least and 4 being the most reactive: с 3 CI H D CI

4. a) The hydrogens labeled in the structure below have different acidities. Assign the correct hydrogen to the following pKa values. (i) pKa=16 (ii) (iii) (iv) pKa=26 pKa=45 pKa=62 A α α b) Circle the hydrocarbon that would have the lowest heat of hydrogenation. 2 B H H Br H H X x c) Rank the following alkyl halide in order of increasing reactivity in an SÃ1 mechanism 1 being the least and 4 being the most reactive: с 3 CI H D CI

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter14: Elimination

Section: Chapter Questions

Problem 30E

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