Question

Write the chemical formula for the following:

a. The conjugate acid of amide ion, NH₂-
b. The conjugate base of nitric acid, HNO₃

Answer 1

Follow the rules of Bronsted Lowry theory

• Acids take a H
• Bases donate a H

So

#a

NH_2-

Add a H

• Conjugate acid is NH_3

#b

HnO_3

Take a H

• Conjugate base is NO_3-

Answer 2

#1

Conjugate acid means one H+ is added

• NH_2+H+=NH_3

sw

#2

Conjugate base means donate a H+

• HNO_3-H=NO_3-