Question

Which compounds are lewis acids? select all that apply. (ch3ch2)2hc+ cl3c− ch3nh2 bbr3?

Answer 1

The Lewis acids are electron pair acceptors due to the availability of vacant orbitals they accept electrons from the donor compounds.

• 
  `(CH_3CH_2)_2CH^(+)` is a Lewis acid due to the unfilled valence shell on carbon atom (possessing positive charge) it accepts electron readily.
• 
  `CCl_(3)^(-)` is not a Lewis acid due to the presence of negative charge which represents that there are electrons available for donation.
• 
  `CH_3NH_2` is not a Lewis acid due to the presence of lone pair on nitrogen which is easily donated to the acceptors.
• 
  `BBr_3` is a Lewis acid due to the availability of vacant p-orbital on boron atom.

Hence,
`(CH_3CH_2)_2CH^(+)` and
`BBr_3` are Lewis acids.