Titration and Indicators

Question 1

What are the types of Litmus Paper

Answer 1

Synthetic and Natural

Question 2

paper that has been dipped in a substance that will undergo a color change when it is dipped in either an acid or base

Answer 2

Litmus paper

Question 3

is called an indicator because it is used to indicate whether the solution is an acid or base

Answer 3

Litmus paper

Question 4

If the red litmus paper turns blue

Answer 4

solution is basic (ph>7)

Question 5

if the blue litmus paper turns red

Answer 5

solution is acidic (ph<7)

Question 6

substance that changes color at a specific pH and is used to indicate the pH of the solution

Answer 6

indicator

Question 7

active ingredient in indicator

Answer 7

anthrocyanin

Question 8

is a common garden plant with flowers that may come in many colors depending on the pH of the soil

Answer 8

hydrangea

Question 9

blue hydrangea flowers means

Answer 9

soil is acidic

Question 10

creamy white hydrangea flowers means

Answer 10

soil is neutral

Question 11

pink hydrangeo flowers means

Answer 11

soil is basic

Question 12

indicator that is produced from a substance that is naturally occurring or is itself a naturally occurring substance

Answer 12

natural indicator

Question 13

examples of natural indicator

Answer 13

red beets
blueberries
cranberries

Question 14

What is the active ingredient found in natural indicator?

Answer 14

anthrocyanin

Question 15

compounds created in a chemistry lab rather than compounds found in nature

Answer 15

synthetic indicators

Question 16

True or False: both naturally occurring indicators and synthetic indicators are weak organic acids or bases

Answer 16

true

Question 17

What is a common synthetic indicator used in most chemistry laboratories

Answer 17

Phenolphthalein

Question 18

indicator that changes color at pH of 8.2 whereas it is colorless before 8.2 and after it is pink

Answer 18

phenolphthalein

Question 19

What is the color of Phenolphthalein before pH is 8.2?

Answer 19

colorless

Question 20

What is the color of Phenolphthalein after pH is 8.2

Answer 20

pink

Question 21

changes color from ph 3.2 to 4.4

Answer 21

methyl orange

Question 22

color of methyl orange below 3.2

Answer 22

red

Question 23

above 4.4 color of methyl orange

Answer 23

yellow

Question 24

between 3.2 and 4.4 of methyl orange

Answer 24

orange

Question 25

donates a proton

Answer 25

Bronsted-Lowry acid

Question 26

accepts a proton

Answer 26

Bronsted-Lowry base

Question 27

What are the requirements for a substance to function as an acid-base indicator?

Answer 27

substance must have an equilibrium affected by hydrogen ion concentration two forms of compound on different sides of equilibrium must have different color

Question 28

pH range of methyl violet

Answer 28

0.0 - 1.6

Question 29

ph range of thymol blue

Answer 29

1.2 - 2.8

Question 30

orange IV ph range

Answer 30

1.3 - 3.0

Question 31

methyl orange ph range

Answer 31

3.2 - 4.4

Question 32

bromphenol blue pH range

Answer 32

3.0 - 4.7

Question 33

congo red pH range

Answer 33

3.0 - 5.0

Question 34

bromocresol green pH range

Answer 34

3.8 - 5.4

Question 35

methyl red pH range

Answer 35

4.8 - 6.0

Question 36

litmus pH range

Answer 36

5.0 - 8.0

Question 37

chlorophenol red pH range

Answer 37

4.8 -6.2

Question 38

bromothymol blue pH range

Answer 38

6.0 - 7.6

Question 39

phenol red pH range

Answer 39

6.4 - 8.2

Question 40

thymol blue pH range

Answer 40

8.0 -9.6

Question 40

phenolphthalein pH range

Answer 40

8.2 - 10.0

Question 41

thymolphthalein pH range

Answer 41

9.4 - 10.6

Question 42

alizarin yellow R ph range

Answer 42

10.1 - 12.0

Question 43

Methyl blue pH range

Answer 43

10.6 - 13.4

Question 44

indigo carmine pH range

Answer 44

11.4 - 13.0

Question 45

color range of methyl violet

Answer 45

yellow-blue

Question 46

color range of thymol blue

Answer 46

red-yellow

Question 47

color range of orange IV

Answer 47

red-yellow

Question 48

color range of methyl orange

Answer 48

red-orange

Question 49

color range of bromphenol blue

Answer 49

orange/yellow-violet

Question 50

color range of congo redd

Answer 50

blue-red

Question 51

color range of bromocresol green

Answer 51

yellow-blue

Question 52

color range of methyl red

Answer 52

red-yellow

Question 53

color range of litmus

Answer 53

red-blue

Question 54

color range of chlorophenol red

Answer 54

yellow-red

Question 55

color range of bromothymol blue

Answer 55

yellow-blue

Question 56

color range of phenol red

Answer 56

yellow-red/violet

Question 57

color range of thymol blue

Answer 57

yellow-blue

Question 58

color range of phenolphthalein

Answer 58

colorless-pink

Question 59

color range of thymolphthalein

Answer 59

colorless-blue

Question 60

color range of alizarin yellow R

Answer 60

yellow-red

Question 61

color range of methyl blue

Answer 61

blue-pale violet

Question 62

color range of indigo carmine

Answer 62

blue-yellow

Question 63

solution that has a different color for each pH from 0-14

Answer 63

universal indicator

Question 64

produced by creadively mixing many of the individual indicators together so that a different color is achieved for each different pH

Answer 64

universal indicator

Question 65

substance that changes color at a specific pH and is used to indicate the pH of the solution

Answer 65

indicator

Question 66

produced from a substance that is naturally occurring or is itself a naturally occurring substance

Answer 66

natural indicator

Question 67

normally an organic weak acid or base with usually complicated structure

Answer 67

synthetic indicator

Question 68

solution that has a different color for each pH from 0-14

Answer 68

Universal indicator