A student analyzes a sample which produces a positive Molisch Test followed by a negative Iodine/Potassium...
A student analyzes a sample which produces a positive Molisch Test followed by a negative Iodine/Potassium Iodide Test followed by a positive Benedict's Test followed by a positive Barfoed's Test followed by a positive Seliwanoff's Test. The sample is:
A. a starch
B. a ketose
C. an aldose which does NOT have five carbons
D. none of the above
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A student analyzes a sample which produces a positive Molisch
Test followed by a negative Iodine/Potassium...
ne u ral features of car rots encruent, which of the following to distinguish reducing monosaccharides...
ne u ral features of car rots encruent, which of the following to distinguish reducing monosaccharides from reducing disaccharides? (a) Benedict's Test (c) Iodine Test (b) Molisch Test (d) Barfoed's Test for the m arketohexoses is indicated by 5. In the Seliwanoff's test, a positive what color? (a) purple (c) dark reddish brown (d) greenish-blue (b) red-orange 6. Vitamin C is also known as (a) sodium hydroxide (c) ascorbic acid (d) glucose (b) sulfuric acid 7. The oxidation of secondary...
Please, fill in first table for Seliwanoff's Test for Ketoses. Additional info is found in the...
Please, fill in first table for Seliwanoff's Test for Ketoses.
Additional info is found in the images following table. (Second
table is info and image following).
Part C: Seliwanoff's Test for Ketoses Seliwanoff's Test Results Test Tube Sample Prediction Ketose? (Y/N) Observations Distilled water Peach / no change Glucose Peach to red slowly Fructose deep red solution very quickly Sucrose deep red solution quickly Lactose Peach to red slowly Starch Peach to red very slowly Mystery sample Peach to red...
Practice Questions: Carbon Compounds 1. You test a sample with Biuret reagent, and observe a blue...
Practice Questions: Carbon Compounds 1. You test a sample with Biuret reagent, and observe a blue color at the end of the test. Which of the following statements is the best conclusion for this test result? A. You conclude that the sample has no starch. B. You conclude that the sample has no protein. C. You conclude that the sample has no lipid. D. You conclude that the sample has no reducing sugars. E. The test for starch was positive,...
8. Discuss the results of the Benedict's test. Which compounds gave a positive result, and why?...
8. Discuss the results of the Benedict's test. Which compounds gave a positive result, and why? Which gave a negative result, and why? Use your data and the preliminary reading material to help answer this question Use your understanding of the Benedict's test and the iodoform test to answer the following 6. Two compounds have the molecular formula C3H.O.Draw their structural formulas and names using the following test results a Compound A forms a red orange precipitate with Benedict's reagent,...
Can someone help me with the color reactions, positive and negative control, and the 6 questions?...
Can someone help me with the color reactions, positive
and negative control, and the 6 questions?
Sudan IV Test for Lipid 1. Obtain five test tubes and number them 1-5. Your instructor may ask you to test some additional materials. If so, include additional numbered test tubes. 2. To each tube, add the materials listed in Table 3. 3. Add five drops of water to tube 1 and five drops of Sudan IV to each of the remaining tubes. Mix...
TIL. PRE-LAB QUESTIONS - Experiment 8 1. a) Complete the table below. X1/ Xy/ 2 14...
TIL. PRE-LAB QUESTIONS - Experiment 8 1. a) Complete the table below. X1/ Xy/ 2 14 8 25 16 b) On graph paper plot y vs. x (appropriately labeling all axes as well as graphing the best fitting line/curve to the data points). c) Is the relationship between the y and x data pairs linear or non-linear? d) Is the relationship between the y and x data pairs direct or inverse? e) Which expression of k (k=y/x or k=xy) corresponds...
om 4. In the structural features of sw a welch of the following was to distinguish...
om 4. In the structural features of sw a welch of the following was to distinguish reducing monosaccharides freeding disaccharides? (a) Benedict's Test (e) ladine Test (b) Molisch Test (d) Barfoed's Test is indicate 3. In the Seliwanoll's test, a positive result for the presence of ketohexos what color? (a) purple (c) dark reddish brown (b) red-orange (d) greenish-blue 6. Vitamin C is also known as (a) sodium hydroxide (b) sulfuric acid (e) ascorbic acid (d) glucose 7. The oxidation...
1) What chemical is the titrant in this experiment? What chemical is the analyte in this experiment? Experi...
1) What chemical is the titrant in this experiment? What
chemical is the analyte in this
experiment?
Experiment #8: Measuring the Vitamin C Content of Emergen-C™ Objectives: • Students will learn how to use a burette. • Students will learn how to use the iodine starch indicator system to monitor oxidation/reduction reactions. Students will learn how to conduct a titration to determine the amount of analyte in an unknown solution. • Students will learn about ascorbic acid's role as a...
What is the general class of each test reaction in the introduction? Precipitation? Acid-Base? Oxidation eduction?...
What is the general class of each test reaction in the introduction? Precipitation? Acid-Base? Oxidation eduction? anoina to aizy ona svidstils Reaction Class 1 2 iliw 15 TO15192do art sshommua bns nosgol rond dass 101 12575 gbubnium oY noi de lo enor Som 10 910 w II woy Xd on abian aningstid on naloga uzib 3 OOH 4 5 DHET 6 7 SET adus 00 9 Complex ion formation 10 11 No reaction 12 13 14 Combination 15 16 17...
8) HY 8) Consider a reaction that has a negative AH and a positive AS. Which...
8) HY 8) Consider a reaction that has a negative AH and a positive AS. Which of the following statements is true? A) This reaction will be spontaneous only at high temperatures. B) This reaction will be spontaneous at all temperatures C) This reaction will be nonspontaneous at all temperatures. D) This reaction will be nonspontaneous only at high temperatures. E) It is not possible to determine without more information 9) What is the volume of 5.60 g of O2...
ne u ral features of car rots encruent, which of the following to distinguish reducing monosaccharides from reducing disaccharides? (a) Benedict's Test (c) Iodine Test (b) Molisch Test (d) Barfoed's Test for the m arketohexoses is indicated by 5. In the Seliwanoff's test, a positive what color? (a) purple (c) dark reddish brown (d) greenish-blue (b) red-orange 6. Vitamin C is also known as (a) sodium hydroxide (c) ascorbic acid (d) glucose (b) sulfuric acid 7. The oxidation of secondary...
Please, fill in first table for Seliwanoff's Test for Ketoses.
Additional info is found in the images following table. (Second
table is info and image following).
Part C: Seliwanoff's Test for Ketoses Seliwanoff's Test Results Test Tube Sample Prediction Ketose? (Y/N) Observations Distilled water Peach / no change Glucose Peach to red slowly Fructose deep red solution very quickly Sucrose deep red solution quickly Lactose Peach to red slowly Starch Peach to red very slowly Mystery sample Peach to red...
Practice Questions: Carbon Compounds 1. You test a sample with Biuret reagent, and observe a blue color at the end of the test. Which of the following statements is the best conclusion for this test result? A. You conclude that the sample has no starch. B. You conclude that the sample has no protein. C. You conclude that the sample has no lipid. D. You conclude that the sample has no reducing sugars. E. The test for starch was positive,...
8. Discuss the results of the Benedict's test. Which compounds gave a positive result, and why? Which gave a negative result, and why? Use your data and the preliminary reading material to help answer this question Use your understanding of the Benedict's test and the iodoform test to answer the following 6. Two compounds have the molecular formula C3H.O.Draw their structural formulas and names using the following test results a Compound A forms a red orange precipitate with Benedict's reagent,...
Can someone help me with the color reactions, positive
and negative control, and the 6 questions?
Sudan IV Test for Lipid 1. Obtain five test tubes and number them 1-5. Your instructor may ask you to test some additional materials. If so, include additional numbered test tubes. 2. To each tube, add the materials listed in Table 3. 3. Add five drops of water to tube 1 and five drops of Sudan IV to each of the remaining tubes. Mix...
TIL. PRE-LAB QUESTIONS - Experiment 8 1. a) Complete the table below. X1/ Xy/ 2 14 8 25 16 b) On graph paper plot y vs. x (appropriately labeling all axes as well as graphing the best fitting line/curve to the data points). c) Is the relationship between the y and x data pairs linear or non-linear? d) Is the relationship between the y and x data pairs direct or inverse? e) Which expression of k (k=y/x or k=xy) corresponds...
om 4. In the structural features of sw a welch of the following was to distinguish reducing monosaccharides freeding disaccharides? (a) Benedict's Test (e) ladine Test (b) Molisch Test (d) Barfoed's Test is indicate 3. In the Seliwanoll's test, a positive result for the presence of ketohexos what color? (a) purple (c) dark reddish brown (b) red-orange (d) greenish-blue 6. Vitamin C is also known as (a) sodium hydroxide (b) sulfuric acid (e) ascorbic acid (d) glucose 7. The oxidation...
1) What chemical is the titrant in this experiment? What
chemical is the analyte in this
experiment?
Experiment #8: Measuring the Vitamin C Content of Emergen-C™ Objectives: • Students will learn how to use a burette. • Students will learn how to use the iodine starch indicator system to monitor oxidation/reduction reactions. Students will learn how to conduct a titration to determine the amount of analyte in an unknown solution. • Students will learn about ascorbic acid's role as a...
What is the general class of each test reaction in the introduction? Precipitation? Acid-Base? Oxidation eduction? anoina to aizy ona svidstils Reaction Class 1 2 iliw 15 TO15192do art sshommua bns nosgol rond dass 101 12575 gbubnium oY noi de lo enor Som 10 910 w II woy Xd on abian aningstid on naloga uzib 3 OOH 4 5 DHET 6 7 SET adus 00 9 Complex ion formation 10 11 No reaction 12 13 14 Combination 15 16 17...
8) HY 8) Consider a reaction that has a negative AH and a positive AS. Which of the following statements is true? A) This reaction will be spontaneous only at high temperatures. B) This reaction will be spontaneous at all temperatures C) This reaction will be nonspontaneous at all temperatures. D) This reaction will be nonspontaneous only at high temperatures. E) It is not possible to determine without more information 9) What is the volume of 5.60 g of O2...
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