Which sample(s) gave a positive result for Benedict's test?
tert-butanol
formaldehyde
cyclohexanone
acetone
Which sample(s) gave a positive result for Benedict's test? tert-butanol formaldehyde cyclohexanone acetone
Which sample(s) gave a positive result for the 2,4-DNP test? tert-butanol formaldehyde cyclohexanone acetone
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,...
QUESTION 5 Which of the following alcohols will give a positive chromic acid test? O tert-butanol O cyclohexanol O pentan-3-ol O both A and B O both B and C QUESTION 6 - 4. Classify the reaction below as an oxidation, a reduction, or neither. cis-pent-2-ene pentane OA) reduction O B) oxidation O C) neither OD) Both of them Click Save and Submit to save and submit. Click Save All Answers to save all
benedicts test and iodoform test:
propanal
propanone
3. Benedict's Test Indicate which of the two compounds will give a positive result and why. 4. Iodoform Test Indicate which of the two compounds will give a positive result.
3. Tollen's Test Result + or- Functional Group Compound Observations/Conclusions acetone propanal unknown 4. Lucas Test Functional Group Alcohol Result Compound Observations Conclusions 1-butanol 2-butanol 2-methyl-2-propanol unknown 5. Iodoform Test Result +or-) Active Methyl? Compound Observations/Conclusions 2-pentanone 3-pentanone 1-butanol 2-butanol unknown
Questions: 1. What is responsible for a positive Benedict's test? 12-KI test? 2. What is responsible for a positive Biuret test? How are lipids detected? 3. Which biomolecules are present in the food samples? Procedure: Benedict's test 1. Fill 100 mL Beaker with 40 mL of water. 2. Place the burner stand over the burner and light it up using a match. 3. Place the beaker containing water over the burner stand to make a water bath. 4. Label 3...
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
Cyclohexanone was dissolved in a sample with 1 mL of 95% ethanol and a 1% solution of potassium permanganate was added. This resulted in a positive result for the test indicating that cyclohexanone did react with the potassium permanganate. Please include the chemical reaction for this test and a FULL BALANCED EQUATION.
QUESTION 14 Which of the following compounds will give a positive test with Benedict's reagent? Briefly give a reason for your answer. ОН он о ÇH2CHCHCHCH CCH3 ОН ОН ОН Structure 1 СН2СН2ҫнісH2CH2 ОН ОН ОН Structure 2 ОН Structure 3 Structure 4
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,...