Using the Brønsted-Lowry concept of acids and bases, which is the Brønsted-Lowry acid and base in the following reaction? (CH3)2NH(g)+BF3(g)→(CH3)2NHBF3(s)
You cannot apply the Brønsted-Lowry theory to this reaction, because a proton is not transferred during the reaction.
This is a Lewis acid-base reaction.
(CH₃)₂NH: + BF₃ → (CH₃)₂N⁺H-B⁻F₃
The dimethylamine is the Lewis base, because it donates an electron pair to form the B-N bond in the Lewis adduct.
The BF₃ is the Lewis acid, because it accepts the electron pair to form the B-N bond.
Hope this helps.