Conjugate Acid-Base Pairs

What is being donated/accepted between conjugate acid-base pairs?

• a hydrogen (H⁺) ion

• a hydroxide (OH^-) ion

• water

• a neutron

What is the conjugate acid in the following equation?

• PO₄^3- 
• HNO₃ 
• NO₃^- 
• HPO₄^2-
  

What is the conjugate base in the following reaction?

• HCO₃^- 
• HCl
•  H₂CO₃ 
• ^Cl-

Which of the following correctly identifies an Acid-Base Pair?

• HH₄⁺ , OH^-

• H₂O , OH^-

• CaCO_{3 ,}CaCl₂

• HNO₃ , H₂SO₄

Given the reaction above, which compound is the bronsted-Lowry Acid?

• NH₃

• HCl

• NH₄⁺

• Cl^-

Given the reaction above, which compound is the bronsted-Lowry Conjugate base, if HCl is the acid?

• NH₃

• NH₄⁺

• Cl^-

Given the information from the previous three questions, what is NH4⁺ classified as?

• Acid

• Base

• Conjugate Acid

• Conjugate Base

Which of the following word pairs correctly completes the sentence below?
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.

• Acids; pH less than 7
• Acids; pH greater than 7
• Bases; pH greater than 7
• Bases; pH less than 7

The conjugate acid of HCO₃^- is ___ and the conjugate base of HCO₃^- is ___.  (remember that H⁺ ion? well, follow it!!)

• H₂CO₃; CO₃^-2
• CO₃^-2; CO₃^-2
• H₂CO₃; H₂O
• H₂O; H₂CO₃

Which reactant in the following equation is a Bronsted acid?

• ammonium
• ammonia
• hydroxide
• water