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2. Vitamin C is ascorbic acid. Yet, in the structure given in the Background, one does...
help NAME SECTION DATE PARTNER GRADE Experiment 50 PRE-LAB QUESTIONS 1. What foods contain appreciable amounts...
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NAME SECTION DATE PARTNER GRADE Experiment 50 PRE-LAB QUESTIONS 1. What foods contain appreciable amounts of vitamin C? 2. Vitamin C is ascorbic acid. Yet, in the structure given in the Background, one does not see a -COOH group. Instead, one sees a lactorne in the structure. Cirele the lactone. Explain from what functional groups it is formed, and how it is formed. 3. What is the minimum daily requirement of vitamin C to prevent scurvy in adults? 4....
12. (a) Write the structure of Vitamin C (ascorbic acid). [1] (b) Show the structure of...
12. (a) Write the structure of Vitamin C (ascorbic acid). [1] (b) Show the structure of the specie which exist at pH 7.4. [1] (c) Show how this specie formed reacts with a free radical R.[1] (d) What two products are formed as a result? [1+1] (e) Show (with the help of a chemical equation) why the radical chain reaction does not proceed any further? [1] (1) Explain why Vitamin C acts as a radical scavenger? [1]
Ascorbic acid (vitamin C) is an organic molecule necessary for the health of plants and animals....
Ascorbic acid (vitamin C) is an organic molecule necessary for the health of plants and animals. The majority of animals, including most mammals, synthesize ascorbic acid from organic precursors, but some primates are unable to synthesize ascorbic acid and must instead acquire it from dietary sources, such as certain fruits and vegetables. The L- gulonolactone oxidase (GULO) gene encodes an enzyme that catalyzes a required step in the biosynthesis of ascorbic acid. Most mammals carry a functional copy of the...
2) Refer to the following information for parts a-c: Ascorbic acid, commonly known as Vitamin C,...
2) Refer to the following information for parts a-c: Ascorbic acid, commonly known as Vitamin C, is an essential nutrient involved in tw o and the production of neurotransmitters. Diets deficient in Vitamin C can lead to a condition called survy Combustion analysis of a 12.50 g sample of ascorbic acid produces 18.74 g of Co, and 5.11 H.O. The molecular mass of ascorbic acid is 1 76.12 g/ mol a. Determine the empirical formula for ascorbic acid: b. Determine...
Read the article and understand (a) challenges, (b) Background information, (c) What material is used, (d)...
Read the article and understand (a) challenges, (b) Background information, (c) What material is used, (d) What is being done to improve the vitamin C content in plants. (e) what are the findings, and (f) What do you think about the research work (what is your opinion) Plants and most animals can synthesize their own L-ascorbic acid (vitamin C), but a mutation in the L-gulono-γ-lactone oxidase gene in the primate lineage makes it necessary for humans to acquire this vital...
Vitamin C (ascorbic acid) from foods can be measured by titration with I3-If 29.41 mL of...
Vitamin C (ascorbic acid) from foods can be measured by titration with I3-If 29.41 mL of I3- solution are required to react with 0.1970 g of pure ascorbic acid, what is the molarity of the I3- solution? A vitamin C tablet containing ascorbic acid plus inert binder was ground to a powder, and 0.4242 g was titrated by 31.63 mL of I3-. How many moles of ascorbic acid are present in the 0.4242 g sample? Find the weight percent of...
Government and industry analysts routinely measure the quantity of ascorbic acid (vitamin C, C6H8O6) in commercial...
Government and industry analysts routinely measure the quantity of ascorbic acid (vitamin C, C6H8O6) in commercial products such as fruit juices and vitamin tablets. The ascorbic acid reacts with excess iodine, and the amount of I2 remaining is determined with sodium thiosulfate (Na2S2O3). It is suspected by the Montreal Fraud Division that a prominent natural foods importer is defrauding his customers by claiming that his vitamin C tablets contain 45% of the active ingredient ascorbic acid. In one analysis, a...
Problem 4.68 One cup of fresh orange juice contains 125 mg of ascorbic acid (vitamin C,...
Problem 4.68 One cup of fresh orange juice contains 125 mg of ascorbic acid (vitamin C, CH,0) Part A Given that one cup = 239.0 mL calculate the molarity of vitamin C in organic juice Express your answer with the appropriate units. ROD M. Value M Submit Previous Awes RevestA X Incorrect: Try Again; 2 attempts remaining . .
4. Find the structural formula for vitamin C on the Internet and draw the structural formula...
4. Find the structural formula for vitamin C on the Internet and draw the structural formula in the space provided. Indicate the Internet reference where you found the structure and the answer questions below. Internet References Structural Formula of Vitamin Vitamin Vitamin C (Ascorbic acid) a. List the functional groups present in the vitamin C molecule. A chart of the different functional groups is in your textbook. b. Why is vitamin C soluble in water? Hint: Think about the functional...
16 7-2 Titration Calculations Ascorbic acid (vitamin C) reacts with according to the equation Starch is used as an i...
16 7-2 Titration Calculations Ascorbic acid (vitamin C) reacts with according to the equation Starch is used as an indicator in the reaction. The end point is marked by the appearance of a deep blue starch-iodine complex when the first fraction of a drop of unreacted remains in the solution. TI (a) Stundurdization: If 29.41 mL of iodine solution is required to react with 0.197 0 g of pure ascorbic acid, what is the molarity of the iodine solution?! (b)...
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NAME SECTION DATE PARTNER GRADE Experiment 50 PRE-LAB QUESTIONS 1. What foods contain appreciable amounts of vitamin C? 2. Vitamin C is ascorbic acid. Yet, in the structure given in the Background, one does not see a -COOH group. Instead, one sees a lactorne in the structure. Cirele the lactone. Explain from what functional groups it is formed, and how it is formed. 3. What is the minimum daily requirement of vitamin C to prevent scurvy in adults? 4....
12. (a) Write the structure of Vitamin C (ascorbic acid). [1] (b) Show the structure of the specie which exist at pH 7.4. [1] (c) Show how this specie formed reacts with a free radical R.[1] (d) What two products are formed as a result? [1+1] (e) Show (with the help of a chemical equation) why the radical chain reaction does not proceed any further? [1] (1) Explain why Vitamin C acts as a radical scavenger? [1]
Ascorbic acid (vitamin C) is an organic molecule necessary for the health of plants and animals. The majority of animals, including most mammals, synthesize ascorbic acid from organic precursors, but some primates are unable to synthesize ascorbic acid and must instead acquire it from dietary sources, such as certain fruits and vegetables. The L- gulonolactone oxidase (GULO) gene encodes an enzyme that catalyzes a required step in the biosynthesis of ascorbic acid. Most mammals carry a functional copy of the...
2) Refer to the following information for parts a-c: Ascorbic acid, commonly known as Vitamin C, is an essential nutrient involved in tw o and the production of neurotransmitters. Diets deficient in Vitamin C can lead to a condition called survy Combustion analysis of a 12.50 g sample of ascorbic acid produces 18.74 g of Co, and 5.11 H.O. The molecular mass of ascorbic acid is 1 76.12 g/ mol a. Determine the empirical formula for ascorbic acid: b. Determine...
Problem 4.68 One cup of fresh orange juice contains 125 mg of ascorbic acid (vitamin C, CH,0) Part A Given that one cup = 239.0 mL calculate the molarity of vitamin C in organic juice Express your answer with the appropriate units. ROD M. Value M Submit Previous Awes RevestA X Incorrect: Try Again; 2 attempts remaining . .
4. Find the structural formula for vitamin C on the Internet and draw the structural formula in the space provided. Indicate the Internet reference where you found the structure and the answer questions below. Internet References Structural Formula of Vitamin Vitamin Vitamin C (Ascorbic acid) a. List the functional groups present in the vitamin C molecule. A chart of the different functional groups is in your textbook. b. Why is vitamin C soluble in water? Hint: Think about the functional...
16 7-2 Titration Calculations Ascorbic acid (vitamin C) reacts with according to the equation Starch is used as an indicator in the reaction. The end point is marked by the appearance of a deep blue starch-iodine complex when the first fraction of a drop of unreacted remains in the solution. TI (a) Stundurdization: If 29.41 mL of iodine solution is required to react with 0.197 0 g of pure ascorbic acid, what is the molarity of the iodine solution?! (b)...
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