homework due tonight 11:59 pm a couple questions to answeri did one in lab and the other one is homeworkpH of Salt Solutions Using Indicators Lab Report
Each salt table and calculation is worth 1.5 points
NaHCO3
Indicator Color
pH Range Indicated
Thymol Blue
blue
9-14
Metacresol Purple
purple
9-14
Bromphenol blue
purple
3-14
Methyl Red
yellow
6-14
Bromcresol Green
blue
6-14
Phenol Red
pink
8-14
Phenol-phthalien
pink
9-14
Indigo Carmine
blue
1-11
Range Overlap
Calculated pH
9-11
8.34
This salt contains Choose an item.
Calculate the pH of the 0.10 M solution of this salt using the methods described in the
Introduction. Record your answers in the Calc pH column. Related Ka and Kb values are listed
at the end of this lab. In your lab instructions, show your work for this calculation. Take a photo
of your work, include your name and date in the photo and insert the photo below.
Enter photo of your work here
NaHSO4
Indicator Color
pH Range Indicated
Thymol Blue
red
1-2
Metacresol Purple
orange
2-8
Bromphenol blue
yellow
1-2
Methyl Red
pink
1-5
Bromcresol Green
yellow
1-4
Phenol Red
yellow
1-7
Phenol-phthalien
colorless
1-8
Indigo Carmine
blue
1-11
Range Overlap
Calculated pH
2.8
1.56
This salt contains Choose an item.
Calculate the pH of the 0.10 M solution of this salt using the methods described in the
Introduction. Record your answers in the Calc pH column. Related Ka and Kb values are listed
at the end of this lab. In your lab instructions, show your work for this calculation. Take a photo
of your work, include your name and date in the photo and insert the photo below.
Enter photo of your work here
Al(NO3)3
Indicator Color
pH Range Indicated
Thymol Blue
yellow
3-7
Metacresol Purple
yellow
2-8
Bromphenol blue
brown
1-2
Methyl Red
pink
1-5
Bromcresol Green
Green
5
Phenol Red
yellow
1-7
Phenol-phthalien
colorless
1-8
Indigo Carmine
blue
1-11
Range Overlap
Calculated pH
5
Enter Calculated pH
This salt contains Choose an item.
Calculate the pH of the 0.10 M solution of this salt using the methods described in the
Introduction. Record your answers in the Calc pH column. Related Ka and Kb values are listed
at the end of this lab. In your lab instructions, show your work for this calculation. Take a photo
of your work, include your name and date in the photo and insert the photo below.
Enter photo of your work here
NaH2PO4
Indicator Color
pH Range Indicated
Thymol Blue
yellow
3-7
Metacresol Purple
yellow
2-8
Bromphenol blue
purple
3-14
Methyl Red
pink
1-5
Bromcresol Green
green
5-14
Phenol Red
yellow
1-7
Phenol-phthalien
colorless
1-8
Indigo Carmine
blue
1-11
Range Overlap
Calculated pH
3-5
4.68
This salt contains Choose an item.
Calculate the pH of the 0.10 M solution of this salt using the methods described in the
Introduction. Record your answers in the Calc pH column. Related Ka and Kb values are listed
at the end of this lab. In your lab instructions, show your work for this calculation. Take a photo
of your work, include your name and date in the photo and insert the photo below.
Enter photo of your work here
Na2HPO4
Indicator Color
pH Range Indicated
Thymol Blue
blue
9-14
Metacresol Purple
purple
9-14
Bromphenol blue
purple
3-14
Methyl Red
yellow
6-14
Bromcresol Green
blue
6-14
Phenol Red
red
8-14
Phenol-phthalien
pink
9-14
Indigo Carmine
blue
1-11
Range Overlap
Calculated pH
9-11
9.16
This salt contains Choose an item.
Calculate the pH of the 0.10 M solution of this salt using the methods described in the
Introduction. Record your answers in the Calc pH column. Related Ka and Kb values are listed
at the end of this lab. In your lab instructions, show your work for this calculation. Take a photo
of your work, include your name and date in the photo and insert the photo below.
Enter photo of your work here
Na3PO4
Indicator Color
pH Range Indicated
Thymol Blue
blue
9-11
Metacresol Purple
purple
9-14
Bromphenol blue
Purple/blue
3-14
Methyl Red
yellow
6-14
Bromcresol Green
blue
6-14
Phenol Red
Pink/red
8-14
Phenol-phthalien
Pink/red
9-14
Indigo Carmine
blue
1-11
Range Overlap
Calculated pH
9-11
12.6
This salt contains Choose an item.
Calculate the pH of the 0.10 M solution of this salt using the methods described in the
Introduction. Record your answers in the Calc pH column. Related Ka and Kb values are listed
at the end of this lab. In your lab instructions, show your work for this calculation. Take a photo
of your work, include your name and date in the photo and insert the photo below.
Enter photo of your work here
K2CO3
Indicator Color
pH Range Indicated
Thymol Blue
blue
9-14
Metacresol Purple
purple
9-14
Bromphenol blue
purple
3-14
Methyl Red
yellow
6-14
Bromcresol Green
blue
6-14
Phenol Red
pink
8-14
Phenol-phthalien
pink
9-14
Indigo Carmine
blue
1-11
Range Overlap
Calculated pH
9-11
11.6
This salt contains Choose an item.
Calculate the pH of the 0.10 M solution of this salt using the methods described in the
Introduction. Record your answers in the Calc pH column. Related Ka and Kb values are listed
at the end of this lab. In your lab instructions, show your work for this calculation. Take a photo
of your work, include your name and date in the photo and insert the photo below.
Enter photo of your work here
Na2C2O4
Indicator Color
pH Range Indicated
Thymol Blue
green
8
Metacresol Purple
yellow
2-8
Bromphenol blue
purple
3-14
Methyl Red
yellow
6-14
Bromcresol Green
blue
6-14
Phenol Red
pink
8-14
Phenol-phthalien
colorless
9-14
Indigo Carmine
blue
1-14
Range Overlap
Calculated pH
8
8.6
This salt contains Choose an item.
Calculate the pH of the 0.10 M solution of this salt using the methods described in the
Introduction. Record your answers in the Calc pH column. Related Ka and Kb values are listed
at the end of this lab. In your lab instructions, show your work for this calculation. Take a photo
of your work, include your name and date in the photo and insert the photo below.
Enter photo of your work here
NH4Br
Indicator Color
pH Range Indicated
Thymol Blue
yellow
3-7
Metacresol Purple
yellow
2-8
Bromphenol blue
brown
3-14
Methyl Red
pink
6-14
Bromcresol Green
blue
6-14
Phenol Red
orange
8-14
Phenol-phthalien
colorless
1-8
Indigo Carmine
blue
1-11
Range Overlap
Calculated pH
2-8
5.1
This salt contains Choose an item.
Calculate the pH of the 0.10 M solution of this salt using the methods described in the
Introduction. Record your answers in the Calc pH column. Related Ka and Kb values are listed
at the end of this lab. In your lab instructions, show your work for this calculation. Take a photo
of your work, include your name and date in the photo and insert the photo below.
Enter photo of your work here
NH4C2H3O2
Indicator Color
pH Range Indicated
Thymol Blue
yellow
3-7
Metacresol Purple
Orange/yellow
2-8
Bromphenol blue
purple
3-14
Methyl Red
yellow
6-14
Bromcresol Green
blue
6-14
Phenol Red
orange
8-14
Phenol-phthalien
colorless
1-8
Indigo Carmine
blue
1-11
Range Overlap
Calculated pH
6-8
7.13
This salt contains Choose an item.
Calculate the pH of the 0.10 M solution of this salt using the methods described in the
Introduction. Record your answers in the Calc pH column. Related Ka and Kb values are listed
at the end of this lab. In your lab instructions, show your work for this calculation. Take a photo
of your work, include your name and date in the photo and insert the photo below.
Enter photo of your work here
NaBr
Indicator Color
pH Range Indicated
Thymol Blue
green
8
Metacresol Purple
orange
2-8
Bromphenol blue
purple
3-14
Methyl Red
pink
1-5
Bromcresol Green
blue
6-14
Phenol Red
orange
8-14
Phenol-phthalien
colorless
1-8
Indigo Carmine
blue
1-11
Range Overlap
Calculated pH
8
7
This salt contains Choose an item.
Calculate the pH of the 0.10 M solution of this salt using the methods described in the
Introduction. Record your answers in the Calc pH column. Related Ka and Kb values are listed
at the end of this lab. In your lab instructions, show your work for this calculation. Take a photo
of your work, include your name and date in the photo and insert the photo below.
Enter photo of your work here
Questions
1. (0.5 points)Of the eleven 0.10 M solutions, how many experimental pH values agree with
the calculated values? Enter answer here
How many disagree? Enter answer here
2. (1 point)Why is HSO4- not considered an amphiprotic ion? Enter answer here
3. (1 point)Which salt contains one ion that acts as an acid and another ion that acts as a
base? Explain how this results in the observed pH for this salt. Enter answer here
4. (1 point)Which salt consists of ions that do not affect the pH. Explain how this results in
the observed pH for this salt. Enter answer here
Blue
purple
G
14
purple
3
14
Yellow
co
14
Blue
6
14
8
Pink
B
i a
a
14
PINK
G
14
Blue
l
Il
red
l
2
z
8
Yellow
l
2
mink
l
5
Yellow
l
y
yellow
l
7
orange
colorless
Blue
l
l
8
II
yellow
p
3
7
yellow
Z
8
Brown
l
i n
K
Z
S
l
5
green
Yellow
l
7
colorless
l
8
l
Il
Blue
yellow
7
3
Yellow
2
8
purple
3
14
PINK
l
5
S
green
yellow
colorless
Blue
ly
7
l
l
8
l
Il
BLUE
Q
14
purple
a
14
purple
3
14
yellow
6
ly
BILE
Red
Dink
6
14
ly
g
9
14
l
Il
Q
11
purple
g
ly
purpley
3
14
6
14
6
14
Blue
Blue
Blue
yellow
B the
pink
g
14
Pink 1
9
14
Red
Red
Blue
I
II
Blue
a
14
purple
a
ly
purple
3
14
yellow
ee
ly
bine
ee
14
Pink
8
I 4
Pink
9
14
Blue
l
l1
8
Green
8
Z
Yellow
purple
3
14
yellow
ee
ly
Blue
6
ly
p In k
8
14
colorless
a
14
Blue
I
I y
Yellow
3
7
yellow
z
g
Brown
3
p in k
6
blue
6
14
orange
8
14
colorless
l
8
l
Il
Blue
Yellow
purple
Yellow
ly
3
ye now
orange 1
ly
7
Z
g
3
14
U
I 4
Blue
he
orange
8
14
14
Colorless
l
8
Blue
l
Il
8
Green
orange
z
8
purple
3
ly
5
DIN K
l
Blue
6
orange
8
colorless
Blue
the
l
l
14
8
Il
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