What is the bronsted acid of h2po4- + oh-. hpo42- + h2o?

is the Bronsted acid.

Explanation:

An acid is a substance that can donate  one or more proton  

A base is a substance which can accept one or more protons

(Bronsted Acid)    +   (Bronsted Base) ---->  Conjugate Base + Conjugate acid                            

Here we see  

 donates or loses ion to form . Hence is the Bronsted acid (Answer)

Acid loses H+ (proton) to  forms conjugate Base

is the bronsted Base since it gains or accepts ion to form

Base gains H+ (proton) to forms conjugate Acid

a. a primary source combines several different accounts of an event. b. a primary source generally benefits from having been written after an event.

explanation: