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

Question

a) Ag +(aq) + 2CN -(aq) = Ag(CN)2 -(aq)
b) HNO3(aq) + NaOH --> NaNO3(aq) + H2O(l)
c) BeF2(aq) + 2F-(aq) = BeF4 2-(aq)
d) H2SO4(aq) + H2O(l) --> H3O+(aq) + HSO4-(aq)

Answer 1

here is a hint
acid- proton donor
base-proton acceptor

It has to be a or c, or both

Answer 2

Myra gave you good info. A Bronsted acid-base is the transfer of protons (H+) and that is it. Sulfuric acid (d) and nitric acid (b) are examples of such acids. Lewis acid-base chemistry is the transfer of electrons. Lewis acids are electron acceptors and bases are electron donors. A and C are not Lewis acid-base reactions