AP Chemistry Equilibrium

Which molecule is acting as a base in the following reaction?

OH^– + NH₄⁺ → H₂O + NH₃

• OH^–

• NH₄⁺

• H₂O

• NH₃

Which of the following is not a strong base?

• Ca(OH)₂

• Fe(OH)₃

• KOH

• NaOH

Which of the following compounds is a strong acid?

I. HClO₄ (aq)

II. H₂SO₄ (aq)

III. HNO₃ (aq)

• I only

• II only

• II and III only

• I, II, and III

What is the pH of a solution that has an [H⁺] of 2.5 × 10^–5?

• 4.60

• 5.0

• 2.5

• 7

What is the pOH of a solution where the [OH^–] is 7.3 × 10^–2 M?

• -1.14

• 2.0

• 1.14

• 7.3

What is the pOH of a solution that has a pH of 2?

• 10
• 12
• 14
• 1

What is the pOH of a solution where the [H⁺] is 2.5 × 10^–12 M?

• 11.6

• 2.40

• 12

• 2.5

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 accepts protons?

• Brønsted-Lowry Acids
• Brønsted-Lowry Bases
• Arrhenius Acids
• Arrhenius Bases