I get the definition of Lewis acid and base but when the problem like below is given i don't know what to do. Can you thoroughly explain step by step to figure out which is which?
Classify each of the following species as a Lewis acid or a Lewis base: (a) CO2, (b) H2O, (c) I-, (d) SO2, (e) NH3, (f) OH-, (g) H+, (h) BCl3.