Chemistry 30 Acids & Bases

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1.

List four characteristic properties of acids and four characteristic properties of bases.

Acids	Bases

2.

Fill in the chart below by providing simple definitions.

Acid

Base

Arrhenius’s Definition

Brønsted-Lowry Definitions

3.

a.

Write the correct symbol for the hydrogen ion:

b.

Write the correct symbol for the hydronium ion:

4.

Define the term amphiprotic.

5.

Write balanced equations for the:

a.

Dissociation of calcium hydroxide, Ca(OH)₂

b.

Ionization of nitric acid, HNO₃

6.

Write the equation for the ionization of nitric acid, HNO 3, showing the formation of the hydronium ion.

7.

Identify the hydrogen-ion donor & acceptor (present on the reactant side of each equation) in each of the following reactions:

		H + donor (the acid)	H + acceptor (the base)
a.	HNO_{3 (l)} + H₂O_(l) → H₃O⁺_(aq) + NO₃^-_(aq)
b.	C₂H₅NH_{2 (l)} + H₂O_(l) →C₂H₅NH₃⁺_(aq) + OH^-_(aq)
c.	CH₃CO₂H_(l) + H₂O_(l) → CH₃CO₂^-_(aq) + H₃O⁺_(aq)

8.

For each acid listed in question 7, identify it’s conjugate base.

	Acid (Reactant side of equation)	Conjugate Base
a.
b.
c.

9.

Write the formulas for the conjugate base of each of the following acids.

Acid

Conjugate Base

a.

H₂SO₃

b.

HCO₃^-

c.

NH₄⁺

10.

Write the formulas for the conjugate acid of each of the following bases.

Base

Conjugate Acid

a.

H₂O

b.

CO₃^2-

c.

PH₃

11.

Which of the following would you expect to act as Brønsted-Lowry bases:

a.

Br^-

b.

Li⁺

c.

H₃PO₄

d.

NH₄⁺

e.

H₂O

f.

NH₂^-

12.

For each of the following reactions, identify the Brønsted-Lowry acid and Brønsted-Lowry base on the reactant side of the equation, and the conjugate acid and conjugate base on the product side.

a.

HSO₄^-_(aq)	+	CO₃^2-_(aq)	→	SO₄^2-_(aq)	+	HCO₃^-_(aq)

b.

HCO₃^-_(aq)	+	OH^-_(aq)	→	CO₃^2-_(aq)	+	H₂O_(l)

13.	Consider the following two reactions. In which reaction does H₂PO₄^- act as a base? In which does it act as an acid?
			Is H₂PO₄^- an acid or base?
	a.	H₂PO₄^-_(aq) + H₂O_(l) → H₃PO₄_(aq) + OH^-_(aq)
	b.	H₂PO₄^-_(aq) + H₂O_(l) → HPO₄^2-_(aq) + H₃O⁺_(aq)

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Chemistry 30

Acids & Bases Practice Questions

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