Unit C: Outcome 2: Topics 4-6

Question 1

Arhenius Theory Acids

Answer 1

Acids ionize in water to produce hydrogen ions plus an anion

Question 2

Arhenius Theory Bases

Answer 2

Bases are ionic compounds that dissociate into a cation and a hydroxide ion

Question 3

Formula for Arhenius Acid

Answer 3

acid ➡ hydrogen ions + anion

Question 4

Formula for Arhenius Base

Answer 4

base ➡ cation and hydroxide

Question 5

Why do acids ionize?

Answer 5

Ionizes because H+ goes into step to react with the water making H3O+

Question 6

Modified Arrhenius Theory

Answer 6

Acids give up hydrogen ion, Bases take hydrogen ion when in water

Question 7

Modified Arrhenius Theory Acids

Answer 7

Acids are substances that can give up a hydrogen ion in a
reaction with water

Question 8

Modified Arrhenius Theory Bases

Answer 8

Bases are substances that can receive a hydrogen ion in a reaction with water.

Question 9

Properties of Modified Arheinus Acid

Answer 9

-Produce Hydronium ions
-Starts with H or ends with COOH
-Special cases: water can both give up and accept hydrogen
ions

Question 10

Properties of Modified Arhenius Base

Answer 10

-Produce Hydroixde ions
-Formula must be negative to accept H+
-NH3 takes H+, only exception
-Ionic compounds can take negatives when in water

Question 11

Strong Acids

Answer 11

react completely (>99%) with water to produce hydronium ions

Question 12

Weak Acids

Answer 12

reacts incompletely with water to from relatively few hydronium ions

Question 13

True of False: You can have a concentrated weak acid

Answer 13

True, concentration has nothing to do with the strength of an acid.

Question 14

True of False, Dilute Strong acids don’t exist

Answer 14

False, concentration has nothing to do with the strength of an acid.

Question 15

Strong base

Answer 15

a soluble ionic compound containing OH-

> 99%

Question 16

Weak base

Answer 16

a base which reacts only partially with water to produce hydroxide ions

<50%

Question 17

Example of a strong base

Answer 17

Sodium Hydorixide

Question 18

Example of a weak base?

Answer 18

Carbonate ion

Question 19

Monoprotic acid

Answer 19

an acid that can only react once with water to produce a hydronium ion

Question 20

Polyprotic acid

Answer 20

an acid that can react more than once with water to produce a hydronium ion

Question 21

Example of a monoprotic acid

Answer 21

Hydrochloric acid

Question 22

Example of a polyprotic acid

Answer 22

Phosphoric acid

Question 23

Monoprotic Bases

Answer 23

can react only once with water to produce hydroxide ions

Question 24

Polyprotic bases

Answer 24

can react more than once with water to produce hydroxide ions

Question 25

Example of monoprotic base

Answer 25

Acetate ion

Question 26

Example of polyprotic base

Answer 26

Bicarbonate ion

Question 27

Spectator Ion

Answer 27

an ion that is not involved in a reaction (does not change from reactants to products)

Question 28

Net ionic reaction

Answer 28

– a reaction that only shows the elements/ions that are involved in a reaction (Spectator ions are not shown)

Question 29

Halides

Answer 29

A halogen atom with a negative charge

Question 30

Example of Halide

Answer 30

Fluoride

Question 31

Double Replacement Reaction

Answer 31

AB + CD → AD + CB

Question 32

Single Replacement Reaction

Answer 32

A+BC->AC+B

Question 33

Whats an example of a Net ionic double replacement reaction?

Answer 33

Pb2+(aq) + 2I-(aq) → PbI2(s)