Ascorbic Acid Content in Vitamin C Supplements Part 3. Titration of Unknown Ascorbic Acid Solution with NaOH The neutralization reaction between ascorbic acid and NaOH is: HC,H,06(aq) + NaOH(aq) → NaC,H,06(aq) + H20(1) Data Table 3. Titration of an Ascorbic Acid Solution Trial 1 Trial 2 Trial 3 Volume of ascorbic acid solution, mL 25.00mL 25.00mL 25.00ML NaOH buret reading before titration, mL 6.38 mL 10.02 mL 13.94ML NaOH buret reading 10.02 mL 13.94 mL 17.76 mL after titration, mL Volume of NaOH 3.64 mL 3.92mL 3.82mL solution added, mL Mole of NaOH Concentration of ascorbic acid, M Average ascorbic acid concentration, M

Fundamentals Of Analytical Chemistry
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ISBN:9781285640686
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Chapter16: Applications Of Neutralization Titrations
Section: Chapter Questions
Problem 16.20QAP
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Find the Mole of NaOH and Concentration of ascorbic acid M

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R
Chemistry 201
College of the Canyons
Part 2. Preparation and Standardization of NAOH Solution
Ascorbic Acid Content in Vitamin C Supplements
Grams NaOH 2.3485g
The neutralization reaction between KHP and NaOH is:
KHC&H404(aq) + NaOH(aq) → KNaCgH404(aq) + H20(1)
Data Table 2. Standardization of NaOH solution
Trial 1
Trial 2
Trial 3
Mass of empty
97.11969
97.1529 g
97. 4174 9
Erlenmeyer flask, g
97.18439
Mass of Erlenmeyer
flask + KHP, g
97.34649
97.4554g
Mass of KHP, g
0.22689
0.2645g
0.34979
Buret reading before
titration, mL
9.59 mL
26.989
32.28g
Buret reading after
titration, mL
13.98 mL
32. 18 mL
37. 48 g
Volume of NaOH
4.39mL
5. 20 mL
5.20 mL
solution added, mL
I.110 x 10mol
1.295 x10 3
mol
1. 810 x10 mol
Mole of KHP
Concentration of NaOH,
0.2528 M
0.2시90 M
0.3481
M
Average NaOH
concentration, M
D. 2853 M
(Show work here)
-3
mol KHP
Trial 1: D. 22689 x Imol KHP
204.22g KHP
Trial 2:0.2645g x Imol KHP
204. 22g KHP
Trial 3: 0.36A7gx Imol KHP
204.22g KHP
: 1,110 x 10
= 1. 295 x
10 mol KHP
= 1.810 x10 3 mol KHP
63
Mole of KHP
Transcribed Image Text:Enter R Chemistry 201 College of the Canyons Part 2. Preparation and Standardization of NAOH Solution Ascorbic Acid Content in Vitamin C Supplements Grams NaOH 2.3485g The neutralization reaction between KHP and NaOH is: KHC&H404(aq) + NaOH(aq) → KNaCgH404(aq) + H20(1) Data Table 2. Standardization of NaOH solution Trial 1 Trial 2 Trial 3 Mass of empty 97.11969 97.1529 g 97. 4174 9 Erlenmeyer flask, g 97.18439 Mass of Erlenmeyer flask + KHP, g 97.34649 97.4554g Mass of KHP, g 0.22689 0.2645g 0.34979 Buret reading before titration, mL 9.59 mL 26.989 32.28g Buret reading after titration, mL 13.98 mL 32. 18 mL 37. 48 g Volume of NaOH 4.39mL 5. 20 mL 5.20 mL solution added, mL I.110 x 10mol 1.295 x10 3 mol 1. 810 x10 mol Mole of KHP Concentration of NaOH, 0.2528 M 0.2시90 M 0.3481 M Average NaOH concentration, M D. 2853 M (Show work here) -3 mol KHP Trial 1: D. 22689 x Imol KHP 204.22g KHP Trial 2:0.2645g x Imol KHP 204. 22g KHP Trial 3: 0.36A7gx Imol KHP 204.22g KHP : 1,110 x 10 = 1. 295 x 10 mol KHP = 1.810 x10 3 mol KHP 63 Mole of KHP
Chemistry 201
college of the Canyons
Part 3. Titration of Unknown Ascorbic Acid Solution with NaOH
Ascorbic Acid Content in Vitamin C Supplements
The neutralization reaction between ascorbic acid and NaOH is:
HC,H,06(aq) + NaOH(aq) → NaCgH,06(aq) + H20(I)
Data Table 3. Titration of an Ascorbic Acid Solution
Trial 1
Trial 2
Trial 3
Volume of ascorbic acid
solution, mL
25.00mL
25.00mL
25.00mL
NaOH buret reading
before titration, mL
6.38 mL
10.02 mL
13.94mL
NaOH buret reading
after titration, mL
10.02mL
13.94 mL
17.76 mL
Volume of NaOH
3.64 mL
3.92 mL
3.82mL
solution added, mL
Mole of NaOH
Concentration of
ascorbic acid, M
Average ascorbic acid
concentration, M
(Show work here)
64
Transcribed Image Text:Chemistry 201 college of the Canyons Part 3. Titration of Unknown Ascorbic Acid Solution with NaOH Ascorbic Acid Content in Vitamin C Supplements The neutralization reaction between ascorbic acid and NaOH is: HC,H,06(aq) + NaOH(aq) → NaCgH,06(aq) + H20(I) Data Table 3. Titration of an Ascorbic Acid Solution Trial 1 Trial 2 Trial 3 Volume of ascorbic acid solution, mL 25.00mL 25.00mL 25.00mL NaOH buret reading before titration, mL 6.38 mL 10.02 mL 13.94mL NaOH buret reading after titration, mL 10.02mL 13.94 mL 17.76 mL Volume of NaOH 3.64 mL 3.92 mL 3.82mL solution added, mL Mole of NaOH Concentration of ascorbic acid, M Average ascorbic acid concentration, M (Show work here) 64
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