Conjugate Acid Base Pairs

Which compound is the conjugate base?

HCO₃^- + HCl ==> H₂CO₃ + Cl^-

• HCO₃^-

• HCl

• H₂CO₃

• Cl^-

NH₃ + H₂O --> NH₄⁺ + OH^-

What is H₂O in this reaction?

• acid

• base

• conjugate acid

• conjugate base

In the reaction below, H₂O is a(n):

H₂SO₃ + H₂O --> H₃O⁺ + HSO₃^-

• base

• acid

• conjugate acid

• conjugate base

In the reaction HCl + H₂O --> H₃O⁺ + Cl^-, what is the conjugate acid?

• HCl
• H₂O
• H₃O⁺
• Cl^-

Given the equation:

H₂SO₄ + H₂O ↔ H₃O⁺ + HSO₄^{- 1}

What is the conjugate acid?

• H₂SO₄

• H₂O

• H₃O⁺

• HSO₄^{- 1}

Which of the following is transferred between a conjugate acid-base pair?

• An Electron
• A OH^- ion
• A Proton
• A Neutron

NH₃ + H₂O --> NH₄⁺ + OH^-

What is OH^- in this reaction?

• acid

• base

• conjugate acid

• conjugate base

Which of the following show an acid and its conjugate base pair (in that order)

• H₂SO₄, SO₄^2-

• OH^-, H₂O

• NH₄⁺, H₂O

• H₂CO₃, HCO₃^-

Which compound is the conjugate acid? (Hint: Determine the base)

PO₄^3- + HNO₃ ==> NO₃^- + HPO₄^2-

• PO₄^3-

• HNO₃

• NO₃^-

• HPO₄^2-

In the reaction below, H₂O is a(n):

H₂SO₃ + H₂O --> H₃O⁺ + HSO₃^-

• base

• acid

• conjugate acid

• conjugate base