Which of the following are good leaving groups? (Circle all that apply) OH^- H_2

Question

Which of the following are good leaving groups? (Circle all that apply) OH^- H_2O Br^- I^- F^- H^- CH_2^- CH_3OH CH_3SH NH_3 Which of the following are Strong bases? (Circle all that apply) KOH NaNH_2 NaCN H_2O H_2S NaI tBuOH Which of the following reaction conditions will increase the ratio of elimination to substitution products in a reaction of a halogenoalkane? (Circle all that apply) Primary Halogenoalkane Tertiary Halogenoalkane Aqueous Solution High Heat Lower Heat Draw the (most likely) major elimination product for the reaction of 2-methylbutane with ...

Explanation / Answer

1) Hydrogen that tobe removed must be in anti periplanar and staggared to the leaving group.

2) The weaker the base or larger the size, stronger the leaving group ability. Thus I- and Br- are good leaving groups

3) strong bases are KOH and NaNH2 because hydroxides and amides of 1st group cations are strong bases

4)tertiaryhaloalkanes are more reactive than primary and secondary because due to bulkyness

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