Bronsted-Lowry Acids and Bases

The following statements are true for Bronsted Lowry conjugate acid base pairs EXCEPT

• Bronsted Lowry acid is a proton donor

• Bronsted Lowry base is a proton acceptor

• Conjugate acid has 1 hydrogen atom more than base

• Conjugate base has 1 hydroxide more than base

Which of the following shows the correct conjugate acid base pair?

• H₂O (base) / H₃O⁺ (conjugate acid)

• H₂O (acid) / CH₃COO^- (conjugate base)

• CH₃COOH (acid) / H₂O (conjugate base)

• CH₃COOH (base) / CH₃COO^- (conjugate acid)

Which of the following shows the correct conjugate acid base pair?

• SO₃^2-(base) / HSO₃^- (conjugate base)

• HPO₄^2- (acid) / HSO₃^-(conjugate base)

• SO₃^2-(acid) / HSO₃^- (conjugate base)

• HPO₄^2- (acid) / PO₄^3-(conjugate base)

HCI ionizes completely and is irreversible. Why?

• HCI is a strong acid and CI^- is a weak base

• H₂O is a weak base

• CI^- is a strong conjugate base, will not accept H⁺ from H₃O⁺

• CI^- is a weak conjugate base, will not accept H⁺ from H₃O⁺

NH₃ ionizes partially and at equilibrium its concentration is greater than NH₄⁺. Why ?

• NH₃ is a weak acid and NH₄⁺ is a conjugate base

• NH₃ is a weak base and NH₄⁺ is a conjugate acid

• The K_b of NH₃ is less than 1.

• NH₃ is a weak base and OH^- is a strong base

The following statements are true EXCEPT

• Ionization for strong acid is unidirectional

• Ionization for weak acid is reversible

• The weaker the acid, the stronger its conjugate base

• The weaker the acid, the weaker its conjugate base

H₂O is amphiprotic. Which of the following describes what amphiprotic means?

• H₂O is an acid because it is a proton donor

• H₂O is an base because it is a proton acceptor

• H₂O can gain or lose a proton, H⁺

• H₂O can easily form hydronium ion, H₃O⁺

Predict the products and position of the equilibrium for the net reaction of ethanoic acid and sodium fluoride.

• ethanoate ion and hydrogen fluoride / reactants favored

• ethanoate ion and hydrogen fluoride / products favored

• sodium ethanoate and hydrogen fluoride / reactants favored

• sodium ethanoate and hydrogen fluoride / products favored

Predict the products of the net reaction and the position of the equilibrium for sodium dihydrogen phosphate and sodium butanoate.

• butanoic acid and hydrogen phosphate ions / products favored

• butanoic acid and hydrogen phosphate ions / reactants favored

• butanoic acid and phosphate ions / products favored

• butanoic acid and phosphate ions / reactants favored