Problem: According to the Bronsted-Lowry definition, which chemical in the following reaction is the base?H3PO4 + NH3 → NH4+ + H2PO4-a. NH3b. NH4+c. H2PO4-d. H3PO4e. None of the above 

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FREE Expert Solution

We’re being asked to find the Bronsted-Lowry Base in the given reaction. 


Let’s define a Bronsted-Lowry Acid and a Bronsted-Lowry Base. Recall also that Bronsted-Lowry acids and bases occurs in pairs called conjugate acid/base pairs.

Bronsted-Lowry acid → proton (H+) donor

Conjugate base → one less hydrogen form of the Bronsted-Lowry acid

Bronsted-Lowry base → proton (H+) acceptor

Conjugate acid → one hydrogen greater than Bronsted-Lowry base


Given Reaction:      H3PO4 + NH3 → NH4+ + H2PO4- 

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Problem Details

According to the Bronsted-Lowry definition, which chemical in the following reaction is the base?
H3PO4 + NH3 → NH4+ + H2PO4-

a. NH3
b. NH4+
c. H2PO4-
d. H3PO4
e. None of the above