Chp.15 and 16

Question 1

A Brønsted acid is a proton

Answer 1

donor

Question 2

A Brønsted base is a proton

Answer 2

acceptor

Question 3

H+] = [OH-]

Answer 3

neutral

Question 4

[H+] > [OH-]

Answer 4

acidic

Question 5

[H+] < [OH-]

Answer 5

basic

Question 6

common weak acids

Answer 6

acetic acid-HC2H3O2 or CH3COOH
carbonic acid-H2CO3
hydroflouric acid-HF
phosphoric acid-H3PO4

Question 7

CH2COOH

Answer 7

weak acid (acetic acid)

Question 8

CCI3COOH

Answer 8

weak acid

Question 9

HF

Answer 9

weak acid, hydrofluoric acid

Question 10

HNO2

Answer 10

weak acid (nitrous acid)

Question 11

C2H2O4

Answer 11

weak acid (Oxalic acid)

Question 12

HCOOH

Answer 12

weak acid (formic acid)

Question 13

H2SO3

Answer 13

weak acid (sulfurous acid)

Question 14

LiOH

Answer 14

strong base

Question 15

NaOh

Answer 15

strong base

Question 16

KOH

Answer 16

strong base

Question 17

RbOH

Answer 17

strong base

Question 18

CaOH

Answer 18

strong base

Question 19

Sr(OH)2

Answer 19

strong base

Question 20

Ba(OH)2

Answer 20

strong base

Question 21

NH4OH

Answer 21

weak base

Question 22

N(CH3)3

Answer 22

weak base

Question 23

C5H5N

Answer 23

weak base

Question 24

H2O

Answer 24

weak base

Question 25

HCLO4

Answer 25

strong acid

Question 26

HCl

Answer 26

strong acid

Question 27

HBr

Answer 27

strong acid

Question 28

Hl

Answer 28

strong acid

Question 29

HNO3

Answer 29

strong acid

Question 30

H2SO4

Answer 30

strong acid

Question 31

Buffer solution

Answer 31

consists of a weak acid and its conjugate base; Resist changes in pH

Question 32

A buffer solution can be found in

Answer 32

blood

Question 33

Buffer example

Answer 33

CH3COOH (weak acid) + H2) <> CH3COO- (conjugate base

Question 34

Other examples

Answer 34

CH3CHOOH/C
HNO2/NO2-
NH4+/NH3

Question 35

Examples of non-buffer

Answer 35

HCL/CL- 2-
HNO3/NO3-
H2SO4/SO4

Question 36

What makes a buffer solutio

Answer 36

a weak acid and its conjugate base

Question 37

What does not make a buffer solution

Answer 37

a strong acid and its conjugate base

Question 38

Ka =

Answer 38

[H+][A-]/[HA]

Question 39

[H+] =

Answer 39

Ka x [HA]/[A-]

Question 40

-log[H+]=

Answer 40

ph (-log Ka * [Ha]/[H]

Question 41

pH=

Answer 41

pka + log ([A-]/[HA])
-log([H+])

Question 42

lower the pKa

Answer 42

stronger acid

Question 43

Higher Ka

Answer 43

strong acid

Question 44

Henderson-Hasselbalch equation

Answer 44

pH = pKa + log [A-]/[HA] (pH = pKa)