Question

all bronsted acids are Lewis acid but all Lewis acids are not bronsted acids​

Answer 1

Answer:

A Bronsted acid is that which donate a proton. Eg. : HCl. So Lewis acids may not contain proton but can accept lone pair. Hence all Lewis acids are not Bronsted acids.

Answer 2

Bronsted-lowry/proton theory:-

this theory depend upon its ability to donate or accept proton.

Acid:-

acid is denote proton to other substance is called proton

Ex:-HCL,H2SO4,HNO3

Base:-

base is accept proton from another substance.

Ex:-NH3,H2O,

Lewis theory:-

Acid:-

A substance can accept lone pair of elctrons to form coordinate covalent bond is called acid .

EX:-BF3,ALCL3

Base :-

A substance can donate lone pair of elctrons to form coordinate covalent bond with acid is called acid .

EX:-H2O,NH3

all beonsted acids are not Lewis.