what is a bronsted lowry acid or base? (2 Viewers)

[Mr Chi]

what is a bronsted lowry acid or base and how can you work it out if it is a multiple choice question.

 

[lilchezza]

According to the Bronsted-Lowry theory;

An acid is a proton doner ie/it gives up a proton

A base is a proton acceptor ie/it readily gains a proton

How to work it out depends on the question, what was the question?

 

[rama_v]

A Bronsted-Lowry acid is any substance which is a proton donor. A Bronsted-Lowry Base is any substance which is a proton acceptor. For example

HCl_(aq) + H₂O_(l) -> H₃O⁺_(aq) + Cl^-

In this example, the acid is the HCl molecule, because it donates the proton (i.e. the H atom) to the water molecule, which is thus the Bronsted-Lowry base as it accepts the proton.