Acidic and Basic Solutions

CHAPTER 8, SECTION 3

When dissolved in water, these substances

RELEASEhydrogen ions (H+)

which bond with the water (H2O) to

producehydronium ions (H3O-)

ACID

When dissolved in water, these substances

ACCEPThydrogen ions (H+) from water which

produceshydroxide ions (OH-)

BASE

BASE

PROPERTY ACID BASE

Taste Sour Bitter

Conducts electricity Yes Yes (but not as well as acids)

Corrosive Yes Yes

Reactivity with metals

Strong Weaker

Touch Not Slippery Slippery

ACID/BASE Comparision

Measure of how acidic or basic a

solution is, ranging in a scale from 0 to 14; also refers to the ‘potential of

Hydrogen’

pH

A pH of 0-6.9 is

considered…

ACIDIC(pH of 0 is strongest)

A pH of 7.1-14 is considered…

BASIC(pH of 14 is strongest)

A pH of 7 is considered…

NEUTRAL

a)pH = 2.3b)pH = 6.5c) pH = 8.5d)pH = 11.7e)pH = 13.4f) pH = 4.1

LEARNING CHECK #1: Acid or Base? Classify the following pH values:

a)pH = 2.3b)pH = 6.5c) pH = 8.5d)pH = 11.7e)pH = 13.4f) pH = 4.1

a)Acidb)Acidc) Based)Basee)Basef) Acid

LEARNING CHECK #1: Acid or Base? Classify the following pH values:

a) pH 2 or pH 3

b) pH 5 or pH 2

c) pH 3 or pH 1

d) pH 6 or pH 4

e) pH 1 or pH 6

LEARNING CHECK #2: Acid StrengthCopy and then circle the stronger ACID in each pair of pH values

a) pH 2 or pH 3

b) pH 5 or pH 2

c) pH 3 or pH 1

d) pH 6 or pH 4

e) pH 1 or pH 6

LEARNING CHECK #2: Acid StrengthCopy and then circle the stronger acid in each pair of pH values

LEARNING CHECK #3: Base StrengthCopy and then circle the stronger BASE in each pair of pH valuesa) pH 8 or pH 9

b) pH 10 or pH 14

c) pH 13 or pH 11

d) pH 12 or pH 9

e) pH 8 or pH 14

a) pH 8 or pH 9

b) pH 10 or pH 14

c) pH 13 or pH 11

d) pH 12 or pH 9

e) pH 8 or pH 14

LEARNING CHECK #3: Base StrengthCopy and then circle the stronger BASE in each pair of pH values

LEARNING CHECK #4:Acid or Base?

Classify the following as either an ACID or a

BASEa) Soap

b) Vinegar

c) Baking Soda

d) Lemon Juice

e) Soda

f) Antacids

LEARNING CHECK #4:Acid or Base?

Classify the following as either an ACID or a

BASEa) Soap

b) Vinegar

c) Baking Soda

d) Lemon Juice

e) Soda

f) Antacids

a) Base

b) Acid

c) Base

d) Acid

e) Acid

f) Base

Compound that changes color at

different pH values when it reacts with

acidic or basic solutions

INDICATOR

Interaction that occurs between acids

and bases in which the properties of each are canceled out by the other

NEUTRALIZATION

H3O-

* Produced when acids release/give up H+ ions to

water

•Acid + H2O → Acid + H3O-

HYDRONIUM ION

OH-

* Produced when bases accept/gain H+ ions from

water

•Base + H2O → Base + OH-

HYDROXIDE ION

LEARNING CHECK #5:Acid or Base?

Classify the following as relating to an ACID or a

BASEa) Gives up H+ ions to water

b) Gains H+ ions from water

c) Produces H3O- ions

d) Produces OH- ions

e) Produces hydroxide ions

f) Produced hydronium ions

LEARNING CHECK #5:Acid or Base?

Classify the following as relating to an ACID or a

BASEa) Gives up H+ ions to water

b) Gains H+ ions from water

c) Produces H3O- ions

d) Produces OH- ions

e) Produces hydroxide ions

f) Produced hydronium ions

a) Acid

b) Base

c) Acid

d) Base

e) Base

f) Acid