Which of the following Lewis acid-base reactions are not Bronsted acid-base reactions?

Question

a) CH3COOH(aq) + NH3(aq) = CH3COO-(aq) + NH4 +(aq)

b) Cu 2+(aq) + 4NH3(aq) = Cu(NH3)42+(aq)

c) Al(OH)3(s) + OH-(aq) --> Al(OH)4-(aq)

d) BF3(g) + (CH3CH2)2O(l) --> (CH3CH2)2OBF3(l)

Answer 1

In Bronsted/Lowry reactions you have to follow the bouncing H+. If there is no H+ being exchanged, then you don't have B/L.

a. The H+ from the CH3COOH is transferred to the NH3 = B/L
b. There is no transfer of an H+ so it is NOT B/L
c. There is no transfer of an H+ so it is NOT B/L
d. There is no transfer of an H+ so it is NOT B/L

Answer 2

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