Weak and Strong Acids

Name the following in order:
HCl, HBr, HI

• hydrochloric acid, hydrobromic acid, hydroiodic acid

• chloric acid, bromic acid, iodic acid

• chlorous acid, bromous acid, iodous acid

• hydrochlorous acid, hydrobromous acid, hydroiodous acid

What are the formulas for the following?
--hydrochloric acid--
--hydrobromic acid--
--hydroiodic acid--

• HClO₃, HBrO₃, HIO₃

• HCl, HBr, HI

• HClO₄, HBrO₄, HIO₄

• HClO, HBrO, HIO

Consider the general equation for an acid in water:
HA(aq) + H₂O ↔ H₃O⁺ + A^-
If there is a lot of product, what does that tell you about the acid?

• K_a > 1  Strong acid

• K_a > 1  Weak acid

• K_a < 1  Strong acid

• K_a < 1  Weak acid

Which is the weakest acid?

• HF

• HNO₂

• CH₃COOH

• HClO

For this reaction :

HA(aq) + H₂O(l) ⇌ H₃O⁺(aq) + A^-(aq)

Which one can act as an acid ?

• HA(aq) and A^-(aq)

• H₂O(l) and H₃O⁺(aq)

• HA(aq) and H₃O⁺(aq)

• H₂O(l) and A^-(aq)

dissociation of weak acid, HA, is represented by following equation :

HA(aq) + H₂O(l) ⇌ H₃O⁺(aq) + A^-(aq)

The equilibrium constant for this reaction is represented by K_a . Which of the following equation represents expression of equilibrium constant, K_a?

• 
• 
• 
• 

Which of the following is NOT a strong acid

• Sulfuric acid

• Hydrochloric acid

• Perchloric acid

• Hydrofluoric acid

Which of the following acids is considered a strong acid?

• Acetic acid

• Hydrochloric acid

• Citric acid

• Formic acid

What is the main difference between a strong acid and a weak acid in terms of ionization?

• Strong acids partially ionize in water, while weak acids fully ionize.

• Strong acids fully ionize in water, while weak acids partially ionize.

• Both strong and weak acids fully ionize in water.

• Both strong and weak acids partially ionize in water.

Which of the following is a characteristic of a weak acid?

• High pH value

• Complete dissociation in water

• Low electrical conductivity

• High concentration of hydrogen ions