Nobody downloaded yet

Acid base and redox titration of vitamin C - Lab Report Example

Comments (1) Cite this document
Summary
This report seeks to determine the amount of vitamin C in a tablet. The experiment will apply the concept of molality and stoichiometry to determine the number of moles and mass of vitamin C. …
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER94.9% of users find it useful
Acid base and redox titration of vitamin C
Read TextPreview

Extract of sample
"Acid base and redox titration of vitamin C"

Download file to see previous pages 1:1 Moles of vitamin C 0.0031938mol Mass of vitamin C 0.564g Percent of vitamin C in the tablet 85.5% Table 2:The table below summarizes the results if the redox reaction experiment Data Trial Mass tablet used 0.67g Molarity of I3- (moles/L) 0.0990mol/l Initial volume of I3- (mL) 4.1 mL Final volume of I3- (mL) 28.6 mL Volume of I3- used 24.5 ml Moles of I3- used 0.0024mol Vitamin C: base molar ratio 1:1 Moles of vitamin C 0.0024mol Mass of vitamin C 0.43 g Percent of vitamin C in the tablet 64.18 % The equations used to find the answers in the trials are written bellow, Equation for table 1 C6H8O6(aq) + NaOH(aq) -> H2O(l) + Na+(aq) + C6H7O6-(aq) Equation for table 2 C6H8O6(aq) + I3-(aq) -> 3 I-(aq) +C6H6O6(aq) + 2H+(aq) Discussion/Conclusion:Chemical properties of substances initiate reactions. The reduction property of vitamin C, for example, is responsible for the chemical’s property to initiate reactions with other chemicals. The acid has a high tendency to donate electrons to other chemicals forming a basis for reactions. Based on stoichiometry and known information of a chemical in reaction with vitamin C, elements such as the number of moles and even mass of vitamin C can be determined from a reaction that can be either an acid base reaction or a redox reaction. The acid base reaction involved sodium hydroxide solution, the base in the reaction, and vitamin C, the acid. The equation for the reaction is given as follows C6H8O6(aq) + NaOH(aq) -> H2O(l) + Na+(aq) + C6H7O6-(aq) Vitamin C was oxidized in the process while sodium hydroxide was reduced. The redox reaction is on the other hand represented by the following equation, C6H8O6(aq) + I3-(aq) -> 3 I-(aq) +C6H6O6(aq) + 2H+(aq) The oxidation reaction is given by the following equation C6H8O6(aq)->C6H6O6(aq)+...
Chemical properties of substances initiate reactions. The reduction property of vitamin C, for example, is responsible for the chemical’s property to initiate reactions with other chemicals. The acid has a high tendency to donate electrons to other chemicals forming a basis for reactions. Based on stoichiometry and known information of a chemical in reaction with vitamin C, elements such as the number of moles and even mass of vitamin C can be determined from a reaction that can be either an acid base reaction or a redox reaction.
The acid base reaction involved sodium hydroxide solution, the base in the reaction, and vitamin C, the acid. The equation for the reaction is given as follows
C6H8O6(aq) + NaOH(aq) -> H2O(l) + Na+(aq) + C6H7O6-(aq)
Vitamin C was oxidized in the process while sodium hydroxide was reduced.
The redox reaction is on the other hand represented by the following equation,
C6H8O6(aq) + I3-(aq) -> 3 I-(aq) +C6H6O6(aq) + 2H+(aq)
The oxidation reaction is given by the following equation
C6H8O6(aq)->C6H6O6(aq)+ 2H+(aq)
The reduction equation is given by
I3-(aq) -> 3 I-(aq)
From the chemical equation, vitamin C is oxidized while iodine ions are reduced.
The accurate titration is the acid base reaction. This is because it offers the same percentage composition as indicated on the vitamin C tablet used.
The experiments offered different results.
While the redox reaction yielded a percentage composition of 64.19 percent, the acid base reaction yielded 85.5 percent. The difference in the numbers could be due to a number of errors. The first type of error that could have led to the difference is inaccurate measurement of the reactants. Such could occur in measuring readings in the titration process for the redox reactions. ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Acid base and redox titration of vitamin C Lab Report”, n.d.)
Retrieved from https://studentshare.org/chemistry/1447925-acid-base-and-redox-titration-of-vitamin-c
(Acid Base and Redox Titration of Vitamin C Lab Report)
https://studentshare.org/chemistry/1447925-acid-base-and-redox-titration-of-vitamin-c.
“Acid Base and Redox Titration of Vitamin C Lab Report”, n.d. https://studentshare.org/chemistry/1447925-acid-base-and-redox-titration-of-vitamin-c.
  • Cited: 0 times
Comments (1)
Click to create a comment or rate a document
ma
marjoryschroede added comment 4 months ago
Student rated this paper as
The topic of "Acid base and redox titration of vitamin C." was impossible to find. I spent ages to find it. Here at StudentShare, I got the most decent example. Many thanks!
CHECK THESE SAMPLES - THEY ALSO FIT YOUR TOPIC
The Acid Base Disturbance
...? Acid-Base Case Study Angelique Harris Grand Canyon Advanced Pathophysiology and Pharmacology for Nurse Educators NUR-641E April 18, Acid-Base Case Study The acid base disturbance in this patient is caused by a condition known as metabolic alkalosis. Consequently, this state occurs when the PH of the blood in arteries rise above 7.45 which is the maximum PH. The pH above 7.5 is termed as alkalemic. A general decline in hydrogen ion concentration or a surplus of base leads to alkalosis. Considering the case study, the pathophysiology of metabolic alkalosis is common and generally occurs when bicarbonate is increased. This...
2 Pages(500 words)Essay
Acid base balance
...., 2009. Rapid saline infusion produces hyperchloremic acidosis in patients undergoing gynecologic surgery. Anesthesiology, 90, pp. 1265–1270. Shapiro, A., 2007. Interpretation of blood gases. In: Textbook of Critical Care. 3rd edition. Ed. W. C. Shoemaker, S. M. Ayres, A. Grenrik and P. Holbrook. Philadelphia, PA: WB Saunders Company, pp. 274–294. Stewart, P., 2003. Modern quantitative acidbase chemistry. Can J PhysiolPharmacol, 61, pp. 1444–1461. Story, D., 2001.Quantitative physical chemistry analysis of acid-base disorders in critically ill patients. Anaesthesia, 56, pp. 530–533. Wilkes, P., 2008. Hypoproteinemia strong-ion difference and...
4 Pages(1000 words)Essay
Acid base titration
...? Acid base titration Aim The experiment intended to ascertain concentrations of Dilute Hydrochloric acid and Dilute Sulphuric Acid solutions by conducting Acid-Base titrations. Hypothesis Phenolphthalein change of color from pink/purple to colorless signified a transformation of the solution’s nature from being basic to acidic, which was the reaction’s endpoint or neutrality point. This is because in acidic, basic conditions phenolphthalein indicator usually indicates colorless and pink/purple colors respectively. Background theory Acidbase titration is one of the most essential Titrimetric analysis techniques commonly used in wet analysis to determine quantities or concentrations of the reacting reagents (Patnaik, 2010, p. 57... , hence...
5 Pages(1250 words)Lab Report
Commercial Production of Vitamin C
...Page Introduction Vitamin c, chemically is Ascorbic acid, It naturally occurs in fruits and vegetables, it is a vital substance ,and is water salable, Human body can not synthesize Vitamin c, nor can it store it , therefore the body requirements needs to be full filled from diet, through absorption from the gut. Historically, the deficiency of dietary in take can lead to a disease called Scurvy.. In 1 8th century the sailors and solders who used to be ,on ship for long time and there food was deficient in fruits and vegetables would develop scurvy, main symptoms of scurvy are , bleeding gums, bone and Joint pain nerve disorders and death.. ,...
6 Pages(1500 words)Assignment
Lab Titration for Acetic Acid in Vinegar
...vinegar for two reasons: 1) The appearance of phenolphthalein colour will be harder to see if the sample is dark. Therefore, it will lead to incorrect measurements. 2) White vinegar contains only acetic acid and water, there are no additional chemicals that sodium hydroxide can interact with. C) CH3COOH + NaOH → CH3COONa + H2O D) If the tip of the burette had not been filled with sodium hydroxide the average number of mL of the base would have been misleadingly bigger than the actual ammount. Consequently, a bigger value for the weight percent of acetic acid in vinegar would have been received. E) If the solution had been overtitrated the value for the weight percent of...
3 Pages(750 words)Lab Report
Buffer, acid and base
...What is ph and pOH and the difference between the two: pH is a term used in science that means Potential of Hydrogen that helps to measure theacidity and basicity of an aqueous measure. pH is a measure of the hydrogen ion concentration in a solution. The more the H+ ions the solution has, the lower the pH which means the solution will be more acidic. The solutions whose pH is greater than 7 are alkaline or basic in nature while the solutions having less than 7 pH are acidic in nature. pH scale is based from 0 to 14 numbers and the distilled water has pH of 7. Our everyday foods should have 7 pH; it can be a little up or down. A strong battery acid has less than one pH...
4 Pages(1000 words)Research Paper
Orbit with Vitamin C
...Orbit with Vitamin C Wrigley’s currently dominates the gum business with an array of chewing gum products. These products are manufactured with precise consideration of the needs of the various target markets. Various market segments such as children, youths and adults enjoy the tailor made chewing gum that caters for their chewing needs. The advantages of chewing Wrigley’s gum are unlimited. The American dental association is a firm supporter of Wrigley’s products. This is because the chewing gum not only provides an individual the fun associated with chewing, but also come with a number of health benefits. With a health objective to accomplish, the company is introducing a new line of chewing gum products that will be enriched... with...
2 Pages(500 words)Essay
Vitamin C face lotion
...Unit Vitamin C Face Lotion The Vitamin C Face Lotion is a natural skin care ingredient that comprises of the phenoxyethanol compound, which is the focus of this discussion today. It is also known as 2-PHENOXYETHANOL and its utilized in the production of care products, mostly for dermatological purposes, that is, skin care. It is a widely known preservative and antibacterial chemical in skin creams and cosmetics. The figure below highlights and shows the figure representing the molecular structure of the above named compound. The compound’s molecular formula is C8H10O2, and has a molecular weight of 138.1638. Additionally, its density of 1.102 g/cm3 and corresponding...
1 Pages(250 words)Essay
Acid-Base Equilibria
...the solution in the flask was a faint permanent pink. The final volume for NaOH was recorded on the data sheet. 10. A second titration was performed by refilling the NaOH burette and repeating above steps. 11. Molarity of NaOH 0.1800M DATA SHEET VINEGAR ANALYSIS TITRATION #1 NaOH VINEGAR Initial Volume  0  0 Final Volume  45.87  10 Volume Used  45.87  10 TITRATION #2 NaOH VINEGAR  0  0  45.87  10  45.87  10 Titration curve At equivalence point, enough base has been added to reaction to react with all the acid present exhibiting a sharp increase in PH. At half-equivalence point, half of the acetic acid has been converted...
1 Pages(250 words)Lab Report
Acid-Base Equilibria
...Acid-base Titration I Maximum score: 90 points Partner: Lab Section (Day & Time): Attach your plots from the three titrations and answer all of the following questions. 1. Attach your annotated plots and compare the titration curves for HCl, KHP, and one of the unknown acid, ►Near the start of each titration, ►Near the half-equivalence point, ►At the equivalence point, and ►For the region beyond the equivalence point. (40 points) Acid Trial pH at start of titration pH at half-equivalence point pH at equivalence point pH beyond equivalence...
1 Pages(250 words)Lab Report
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Let us find you another Lab Report on topic Acid base and redox titration of vitamin C for FREE!
logo footer
Contact us:
+16312120006
Contact Us Now
FREE Mobile Apps:
  • StudentShare App Store
  • StudentShare Google play
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • Miscellaneous
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us