Quiz 1 - ACID-BASE THEORIES - Chemistry - Grade 11- W5

All Brønsted- Lowry acids

• are aqueous solutions.

• can act as Arrhenius acids.

• donate protons.

• All of the above

Which of the following substances is both a Brønsted-Lowry base and an Arrhenius base?

• NH₃(s)

• NH₃(aq)

• HCl(g)

• HCl(aq)

In the following reaction, which substance acts as a Brønsted-Lowry acid?
HCl       + NH3    $\longrightarrow$      NH4+      +     Cl-

• HCl

• NH3

• NH4+

• Cl–

In the following reaction, which substance acts as a Brønsted-Lowry base?
HCl     +     NH3            $\longrightarrow$         NH4+ + Cl-

• HCl

• NH3

• NH4+

• Cl–

Which of the following is a polyprotic acid?

• HCl

• H₂SO₄

• HNO₃

• HF

Which of the following can act as a Lewis acid?

• NH₃(aq)

• Cl^–(aq)

• BF₄^- (aq)

• Ag⁺(aq)

A Lewis acid

• is an anion.

• donates an electron pair to form a covalent bond.

• can be a substance that does not contain a hydrogen atom.

• All of the above

Which of the following substances can act as an Arrhenius base, a Brønsted-Lowry base, and a Lewis base?

• F^–(aq)

• NH₃(aq)

• H⁺(aq)

• NaOH(aq)

Which of the following will be present in an aqueous solution of H₂SO₄?

• H₃O⁺(aq)

• HSO₄^-

• SO₄^2-

• All of the above

A substance that increases the concentration of OH^- ions in an aqueous solution is known as a(n)

• Arrhenius acid.

• Arrhenius base.

• Lewis acid.

• Lewis base.