Name: Wai Kwan Ng, Jason Student number: 100814 Chemistry B lab report- The determination of the mass of Ascorbic Acid (Vitamin C) in Commercial Vitamin C tablets Date of experiment: 26/2/2014 Title: The determination of the mass of Ascorbic Acid in commercial Vitamin C tablets. Aims: To determine the molarity of cerium(IV) sulphate solution and the mass of ascorbic acid (Vitamin C) in tablets. Introduction Ascorbic acid is an important organic compound in nature. The chemical formula of ascorbic acid is C6H8O6 and its structure is shown in figure 1 (XIANG, et. al., accessed in 2014). It is a white solid if it is pure and a mildly acidic solution will be given out when ascorbic acid is dissolved in water (ZHANG, 2013). Fig.1: Structure of ascorbic acid Ascorbic acid is also called vitamin C and its antioxidant and metabolic properties are essential to both plants and animals. For instances, most of the deficiency-related diseases, like scurvy, can be healed by using ascorbic acid. Moreover, vitamin C is useful in improving human immunity system (ZHANG, 2013). One way that ascorbic acid functions to protect human health is that it can act as an antioxidant to react with the oxidants of the reactive oxygen species (ASARD, et.al., 2004). Reactive oxygen species refers to the reactive molecules containing oxygen and one of the examples is the hydroxyl radical (ZHANG, 2013). This kind of radical can cause damage to human health by interacting with proteins, lipids and nucleic acid in human’s cell (ASARD, et.al., 2004). Since ascorbic acid can react with these radicals, the resulting molecules will become stable and will not harm human’s cell anymore (ASARD, et.al., 2004). However, as human cannot synthesize vitamin C by themselves, t... ... middle of paper ... ...d solution of ascorbic acid. As a result, the first three titres were used even though the first one was a rough try. Conclusion To conclude, the molarity of cerium(IV) sulphate solution was found as 0.0478M by part 1 of the experiment. Moreover, one of the tablets had 63.52mg vitamin C and another tablet contained 61.42mg of vitamin C. Reference 1. ASARD H., et.al., 2004. Vitamin C: Its Functions and Biochemistry in Animals and Plants. Oxon: Garland Science/BIOS Scientific Publishers. 2. KENKEL J., 2014. Analytical Chemistry for Technicians, Fourth Edition. New York: CRC Press. 3. RAMSDEN E.N., 2000. A-Level Chemistry, Fourth Edition. Cheltenham: Nelson Thornes limited. 4. XIANG C., et. al., accessed in 2014. http://cnx.org/content/m38343/latest. Webpage. 5. ZHANG Y., 2013. Ascorbic Acid in Plants: Biosynthesis, Regulation and Enhancement. London: Springer.
The purpose of the Unknown White Compound Lab was to identify the unknown compound by performing several experiments. Conducting a solubility test, flame test, pH paper test, ion test, pH probe test, conductivity probe test, and synthesizing the compound will accurately identified the unknown compound. In order to narrow down the possible compounds, the solubility test was used to determine that the compound was soluble in water. Next, the flame test was used to compare the unknown compound to other known compounds such as potassium chloride, sodium chloride, and calcium carbonate. The flame test concluded that the cation in the unknown compound was potassium. Following, pH paper was used to determine the compound to be neutral and slightly
6 white powders: icing sugar, cornstarch, aspirin powder, baking soda, cream of tartar and mystery powder
(13) Pazirandeh S. Overview of vitamin K. In: UpToDate, Post TW (Ed), UpToDate, Waltham, MA. (Accessed 27th April 2014)
Therefore, extensive research was carried on for the maximum protection of vitamin C maintaining the stability, pH sensitivity and permeation to the skin.
The name of the Vitamin water is power-C. The vitamin water is red. This color red is a warm and positive color associated with our most physical
... C in the diet. Scurvy is recognized by moderate to severe weakness and spongy bleeding gums. (Greenwood 1937) Ascorbic acid, also known as vitamin C, is found in a number of foods; many of which a typical hunter—gatherer would have eaten on a daily basis. Potatoes and other tubers, green vegetables and citrus fruits are among a few of the foods that supplement enough vitamin C to prevent scurvy.
Vitamin C, also known as Ascorbic Acid, has the structural formula C6H8O6. Vitamin C is an essential nutrient believed to have very important benefits to the human body and it enables the body to make efficient use of carbohydrates, fats, and protein. It is needed by the body to repair bones, teeth, and cartilage; heal wounds and scars; help the body absorb iron from certain substances, and promote a healthy immune system. Vitamin C is also needed to form collagen, which is a protein used to make skin tissue, blood vessels, ligaments, and tendons. Vitamin C is an antioxidant, meaning it protects the body’s cells against oxidation and the destructive effects of free radicals within the body. It is also believed that vitamin C helps to prevent
Vitamin C is a necessary vitamin for the body to carry out its functions properly. It is also known as ascorbic acid. It is a water-soluble nutrient that is found in some foods. It acts as an antioxidant in the body which helps to protect cells from the damage caused by free radicals, which are formed when our bodies convert the food we eat into energy. The body needs vitamin C to make collagen which is the protein required in wounds, healing. Moreover, vitamin C promotes the absorption of iron from fruits and vegetables and helps in promoting the immune system. Vitamin C is also important to protect our body from cardiovascular disease, prenatal health problems, eye disease, and skin wrinkling. We can obtain vitamin C from food and other sources.
According to Witney and Rolfes 2012, Vitamin C is a water-soluble vitamin that is necessary for normal growth and development. Water-soluble vitamins dissolve in water and leftover amounts of the vitamin leave the body through the urine. Hence the reasons why we need a continuous supply of this vitamin our diet. Vitamin C in humans must be ingested for survival. It is an electron donor, and this property accounts for all its known functions. As an electron donor, vitamin C is a potent water-soluble antioxidant in humans.
This unexpected result is the result of the sodium atom separating from the citrate, and the citrate is attracted to the vitamin C making it larger and thus much more difficult to escape. This connection would be powerful enough to cause the vitamin C to stay in the body for much longer than it would normally do so, the body more time to break down the vitamin C and use it. Though this reaction is not what was originally expected from the results in the experiment, it did changes the perspective of the research. Further study could give a glimpse into more of why this happens, and if the created substance that is with vitamin C is useable by the
Complete lack of ascorbic acid (a.k.a Vitamin C) in the diets of humans and other
PQQ is not currently classified as a vitamin, although it has been shown to be an important nutrient in mammals. Free PQQ is widely found in most dietary sources; natural sources as well as man-made products. The highest naturally occurring concentrations are found in parsley (34.2 ng/g), and f...
Vitamin E in all its forms, functions predominantly as an antioxidant by protecting cells from free radicals in the body. Vitamin E works as an antioxidant by donating a hydrogen atom from a hydroxyl group to a free radical within the body. Vitamin E also plays a role in immune system function and protects cell membranes and regulation of gene expression. Vitamin E has been studied to uncover other medical usages, including prevention or treatment of many health conditions [1].
Nowadays, healthy is the number one individual and also governmental concern. As the saying goes, ‘an apple a day keeps the doctor away’ is clearly show that eat nutritious food such as fruits and vegetables can provide a good health and can prevent us from harmful diseases. As we know, vegetables provided various types of vitamins needed by the body for instance pumpkin contains a lot of vitamin A, tomatoes contain vitamin C and spinach contains folate. Pumpkin is one of nature’s riches sources of alpha-carotene, a carotenoid that converts to retinol which is a form of vitamin A. The amount of vitamin A that contain in the pumpkin per serving (116g) is 171%, vitamin C 17%, calcium 2% and iron 5% (Pumpkin raw, 2014). There are a lot of benefits when consuming vitamin A, for example this vitamin promotes healthy vision, bone growth, reproduction and help boosts our immune system. Apart from that, a diet high in vitamin A may lower the risk of many types of cancer. Besides, some vegetables also contain a lot of vitamin C such as tomatoes, bell peppers and broccoli. The function of vitamin C is it helps heal the wounds and keep away the body from bacterial infection. According to researchers at Albert Einstein College of Medicine of Yeshiva University, they discovered that vitamin C can kill drug-resistant tuberculosis (TB) bacteria (Libov, 2013, para. 3). Besides that, vitamin C
The chemical name for vitamin C is ascorbic acid. Its molecular structure is fairly simple to recognize, C6H8O6. There are many positive properties of vitamin C. It is a water-soluble vitamin, so it is easily ingested into the bloodstream. It is also “virtually nontoxic” (3). When vitamin C is ingested, the body only uses what is needed. The rest is carried out of the body through urine. An experiment was carried out using guinea pigs to test the toxicity of the vitamin. “Guinea pigs that were given one half of one percent of their body weight of ascorbic acid per day for a period of days showed no symptoms of toxicity” (3).