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instructions in the pdf. lab is all completed, need the report form to be done. no plagiarism is allowed and the work should not be posted online.

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Results
Dilution of Acids and Bases
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com | Ope | fees | GE 9005 omer | (ee
cm [1181] qa) 0.ug 1g 06 | 0.14
NaOH |
Cclodd ok loo
Color | Quple | Dank Green hie dels White
T

Buffer dilution
Solution XXXXXXXXXXs 6
Conc. 10° mM 10° mM 1 CIM] 10°M 107M
I FRoWC 8% 0.35
wie |" PERL BRL XXXXXXXXXX)

{ 3
Color °S Blue amen een
Conc. | 5x107M | 5x10°M | 5:10°M | 5x10°M | 5x10°M | 5x107M
5s lm |[©TT[*85 BAS [74 [8X [8.05
HOAc/NaOAc WC
=
| (00> =)
L Color CrecnPlie ello Boveen veld [Ee
| Conc. | Undiluted 1:10 1:100 1:1,000 1:10,000 | 1:100,000

Lente |" [2.61] 3.01 | 3.78| 443| GF gs
or | RU | Nello aN pd (OFA |
“| “kal hi out | Sol is Green
Buffer Volume added [ Volume of
Capacity Initial pH _| (Buffer Solution) | Final pH _| NaOH Added

La
77 oy - -
enna (1 = we ren
HOATNIOAT

6%
Lemonsic 5 [0 ml[2.70 | Jf 1
yells


Name                                    
Group             
Results
Dilution of Acids and Bases
pH of distilled water is
pH of tap water is
            
1
2
3
4
5
6
Solution
Conc.
10-2 M
10-3 M
10-4 M
10-5 M
10-6 M
10-7 M
A.
HCl
pH
Colo
B.
HOAc
pH
Colo
C.
NaOH
pH
Colo
D.
NH3
pH
Colo
Buffer dilution
Solution
1
2
3
4
5
6
Conc.
10-2 M
10-3 M
10-4 M
10-5 M
10-6 M
10-7 M
A.
Buffe
pH
Colo
Conc.
5x10-2 M
5x10-3 M
5x10-4 M
5x10-5 M
5x10-6 M
5x10-7 M
B.
HOAc/NaOAc
pH
Colo
Conc.
Undiluted
1:10
1:100
1:1,000
1:10,000
1:100,000
C.
Lemonade
pH
Colo
Buffer Capacity
Initial pH
Volume added
(Buffer Solution)
Final pH
Volume of
NaOH Added
Distilled H2O
Lemonade
Questions
·    Compare the pH values in the dilution experiment for each of the acids and bases used to the pH determined for distilled water. Do the pH values for the more dilute solutions approach the pH of the distilled water? What would you predict the pH to be if you diluted the 10-7 M HCl solution by a factor of 10?
·    Compare the pH values in the dilution experiment for the strong acid (HCl) and the weak acid (acetic acid). Do they both have the same pH values at the same concentrations? Do the pH values increase at the same rate across the wells?
·    What is the effect of dilution on the buffer solution? What is the effect of dilution on the acetic acid/sodium acetate solution? On the pH of the lemonade solution?
·    Compare the volumes of base used to change the pH by 1 unit for water, buffer, acetic acid/sodium acetate solution and lemonade (note that you used less lemonade than the other solutions). Do the latter two solutions behave more like the buffer or water?
Answered 1 days After May 08, 2024

Solution

Baljit answered on May 10 2024
4 Votes
Name                                    
Group             
Results
Dilution of Acids and Bases
pH of distilled water is
7.08
pH of tap water is
7.73
            
1
2
3
4
5
6
Solution
Conc.
10-2 M
10-3 M
10-4 M
10-5 M
10-6 M
10-7 M
A.
HCl
pH
2.25
2.98
3.94
5.23
5.55
5.80
Colo
Ruby Red
Yellow
Ruby Red
Green
Yellow
Green
B.
HOAc
pH
4.40
4.84
4.90
5.14
5.00
5.07
Colo
Orange
Yellow
Orange
Yellow
Orange
Yellow
C.
NaOH
pH
11.81
9.91
9.48
9.11
9.06
8.14
Colo
Purple
pink
Green
white
Yellow
white
Buffer dilution
Solution
1
2
3
4
5
6
Conc.
10-2 M
10-3 M
10-4 M
10-5 M
10-6 M
10-7 M
A.
Buffe
pH
7.02
7.91
8.26
8.35
8.25
8.19
Colo
Blue Green
Blue
Light Green
Green
Yellow
Green
Conc.
5x10-2 M
5x10-3 M
5x10-4 M
5x10-5 M
5x10-6 M
5x10-7 M
B.
HOAc/NaOAc
pH
6.97
7.85
8.25
7.99
8.14
8.05
Colo
Dark Green
Blue
Yellow
Green
Yellow
Blue Green
Conc.
Undiluted
1:10
1:100
1:1,000
1:10,000
1:100,000
C.
Lemonade
pH
2.67
3.01
3.78
4.43
4.85
5.13
Colo
Ruby Red
Yellow
Orange
Greenish yellow
Dark Yellow
Light Green
Buffer...
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