Strong-Weak Acid and Base

Correct statement about acids is/are

• they have bitter taste

• they changes the colour or red litmus to blue

• they changes the colour or blue litmus to red

• all above

Three acidic solutions A, B and C have pH = 0; 3; and 5 respectively. Which solution has the highest concentration of H+ ions?

• A

• B

• C

• don't know

When NaOH and HCl are mixed in equal concentration, the result is

• the formation of salt +H₂O

• the formation of salt + hydrogen gas

• the formation of salt + oxygen gas

• All above are correct

A student detected the pH of four unknown solutions A, B, C and D as follows: 11, 5, 7 and 2. Predict the nature of these solutions. Which one is neutral solution

• A

• B

• C

• D

Which of the following is the correct definition for a strong acid?

• Partially dissociates into ions when dissolved in water and the change is not reversible

• Fully dissociates into ions when dissolved in water and the change is not reversible

• Fully dissociates into ions when dissolved in water and the change is reversible

• Partially dissociates into ions when dissolved in water and the change is reversible

Which of the following is a strong acid?

• Ethanoic acid

• Nitric acid

• Carbonic acid

• Citric acid

Which of the following is the correct balanced equation showing the dissociation of sulfuric acid into ions?

• H₂SO₄ (aq) → H⁺ (aq) + SO₄^–(aq)

• H₂SO₄ (aq) ⇌ 2H⁺ (aq) + SO₄^2- (aq)

• HSO₄ (aq) → H⁺(aq) + SO₄^–(aq)

• H₂SO₄ (aq) → 2H⁺ (aq) + SO₄^2- (aq)

What are the formulas for the following?

a. sulfuric acid

b. nitric acid

• H₂SO, HNO

• H₂SO₃, HNO₃

• H₂S, H₃N

• H₂SO₄, HNO₃

Name the following in order:
HClO₄, HClO₃

• chlorous acid, hypochlorous acid
• perchloric acid, chloric acid
• chloric acid, perchloric acid
• hypochlorous acid, chlorous acid

Strong acids and bases...

• do not break apart into ions (non-electrolyte)
• partially break apart into ions (weak electrolyte)
• completely break apart into ions (non-electrolyte)
• completely break apart into ions (strong electrolyte)