So as we see even if we would Vitamin c lab report to store a slightly smaller number of boxes on the ship if we would take the fruit juice, taking the whole fruits would be the favored option. However the results of this investigation showed otherwise. Wash of any spills with water 2 Take 5cm3 of 0.
Paragraph 2 0 No paragraph-level conversations. However, since the need of vitamin c for one person is not that big, the addition of the captain to my calculations would not have an crucial effect on the result and oranges would still be the best fruit to take.
It shows that test tubes 7, 9 and 10 have the least amounts of Vitamin C while from the fruit juices, test tube 3 has the highest amount of vitamin c.
Maybe the juice became a bit too dilute. In order to obtain reliable results however, the experiment should have been carried out three times, and the average volume of liquids required to decolourize could have been obtained, giving a more realistic picture of the concentrations.
A larger amount of it was prepared for this case.
Vitamines Vitamin C, also called ascorbic acid, is a water soluble vitamin. Maybe some fruits were on the shadier side showing low levels of vitamin C. Continue the same way for other fruit juices Do not forget to wash out the beaker and the pipette after each juice is used 8 Lastly, calculate the concentration of ascorbic acid present in each fruit juice: Due to time constraints, this experiment was only carried out once.
That means it could be possible we were overshooting the end point and based on that calculated a slightly different concentration of vitamin c for the fruit juice. Moreover, both of the processed juices seem to have lower amounts of DCPIP as they hardly change from their original colour purple.
So that means if we now consider the vitamin C content relative to the volume it turns out that using oranges would be the best fruits to take because their vitamin C concentration mass per unit volume is the highest and therefore we need to take less oranges which outweighs the disadvantage of their big volume.
Maybe it would have been better to use a burette, which also has a lower uncertainty 3 5 We were told that the concentration of ascorbic acid provided was 0.
Also the juice could easily goo bad and the vitamin c content in the juice would decrease due to oxygen oxidation of ascorbic acid. The plots were joined using a trend line so that the trend can be seen more clearly.
Since the ripening stage was not informed, the ascorbic acid concentration could have varied and therefore affected the results of the experiment. The fact that they decolourised from their original colour was taken as proof that ascorbic acid was present. However, since it is very hard to determine a the exact volume we disregarded this fact in our calculations and discussions and just assumed that the thickness of the peel would not alter our final result too much.
Paragraph 2, Sentence 1 0 No sentence-level conversations. Vitamin C concentration decreases during the ripening process. So dependent on the type of orange the peel can be very big and this fact might have a crucial effect on the calculations. Into the second test tube, add the same volume of distilled water as ascorbic acid that you added in test-tube 1.
Data Processing Using this formula the concentration of ascorbic acid in all the liquids was found Volume of 0. Quantitative Data In the following table, the test-tube with distilled water will not be taken into account as the DCPIP was not decolourized.
This fact is consistent with the findings of the experiment, where the concentration of ascorbic acid in fresh orange is the highest from all the samples tested 0.Vitamin C, also called ascorbic acid, is a water soluble vitamin. It is a powerful reducing agent that is able to decolourise blue DCPIP (dichlorophenol indophenols).
The decolourisation of DCPIP can therefore be used to calculate the vitamin C content of a variety of fruit juices. Research. Chemistry 11 Santa Monica College Part III: Name of Sample Used: _____ 1.
Briefly describe the sample you chose to examine and how you prepared it for analysis. vitamin C lab report Words | 8 Pages. Measuring the Vitamin C content in a variety of fruit juices Background Information Vitamin C, also called ascorbic acid, is a water soluble vitamin.
Redox Titration of Vitamin C Lab Report Pre-Lab Questions 1. A solution is prepared by dissolving g ascorbic acid C6H8O6 in 1L of water. What is the molarity of the solution? Post-Lab Questions 1. Write the equation for the best fit line determined in your standardized titrations.
Chemistry Revised Winter - K. Marr Page 1 of 6 Lab 4. Analysis of Vitamin C Prelab Assignment Before coming to lab: This exercise does not require a report in your lab notebook. Record your experimental. Ascorbic Acid Titration of Vitamin C Tablets that occurs between sodium hydroxide and sulfuric acid on your report sheet.
You will measure out a small volume of sulfuric acid and use a buret to determine the volume of Part A. Preparation of Vitamin C Tablet Solutions LAB. of.Download