explain-why-bromoalkane-b-shown-below-participates-in-sn1-reaction-at-a-rate-muc

Question

Explain why the bromoalkane (b) shown below participates in an S _N1 reaction at a much lower rate compared to the bromoalkane (a).

Comparison of two bromoalkanes showing SN1 reaction rates: fast for (a) and extremely slow for (b).

Accepted Answer

Because of the instability of a bridgehead carbocation.

Answer

Due to the competing S_N2 reaction.

Answer

Due to the competing elimination reaction.

Answer

Due to the presence of a bad leaving group.