Question

how to classify the compounds into bronsted acid and bronsted base

Answer 1

bronsted acids are electron receivers and bronsted bases are electron donars
by observing the lone pairs of compounds we can decide 

if there are lone pair electrons then it is a base n no lone pair electrons it is acid





hope its helpful...

Answer 2

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bronsted acids are electron receivers and bronsted bases are electron donars

by observing the lone pairs of compounds we can decide 

if there are lone pair electrons then it is a base n no lone pair electrons it is acid