Which sample(s) gave a positive result for the 2,4-DNP test?
tert-butanol
formaldehyde
cyclohexanone
acetone
2,4-DNP test is given by carbonyl group of ketone and aldehyde .
Hence, formaldehyde, cyclohexanone and acetone gave a positive result for the 2,4-DNP test.
Which sample(s) gave a positive result for the 2,4-DNP test? tert-butanol formaldehyde cyclohexanone acetone
Which sample(s) gave a positive result for Benedict's test? tert-butanol formaldehyde cyclohexanone acetone
3. What is a positive test for the 2,4-DNP test with an aliphatic ketone? (2 points) 4. Draw the final product you obtain by reacting acetone with 2,4-DNP. (2 points)
#106 1. 2,4-DNP Test 2. Silver Mirror tert 3. Chromic acio / Shiff's Reagent 4. Iodo form test
Propose a structure and state information provided by the clues: C8H14O, achiral, 2,4-DNP test gave a red precipitate. KMnO4 gave no change. Treatment with D2O/NaOD gave C8H11D3O. The carbon NMR shows 7 lines. The DEPT135 has only five lines with just one of these inverted.
An unknown substance had a positive reaction with 2,4-DNP test. The unknown reacted like a secondary alcohol with the Lucas reagent. It was negative with the Iodoform and Benedict's test. What possible functional groups does the unknown contain? -primary alcohol -secondary alcohol -tertiary alcohol -ketone -aldehyde -methyl -none tested I answered ketone and aldehyde. I did not receive full credit. I also answered secondary, tertiary, ketone, and acetone, but did not receive full credit.
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
1. (6 pts) These are some of the preliminary tests that you will be doing on days 1-2. For each test, write down what type of molecule would give a positive test and what a positive result would look like. DNP: Solubility Beilstein: Ignition: 2. (2 pts) For the 2,4-dinitrophenylhydrazine test, write a chemical reaction between that reagent and one of the "known" compounds that would give a positive result. 17 1. (6 pts) These are some of the preliminary...
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,...
EXPERIMENT 4 Organic Families - Reactions and Identification of Functional Groups PART A. Reactions of Alkanes and Alkenes 1. Action of Bromine Water Observation Organic Compound cyclohexene cyclohexane Equations: Write an equation for the above compounds which caused a decolourisation of bromine water. Name and draw all reactants and products. Distinguishing Test for Primary, Secondary and Tertiary Alcohols PART B. 1. Lucas Test for Alcohols Organic Compound tert-pentanol (2-methyl 2-butanol) 2-pentanol Observation 1-pentanol Equations: Write an equation for the above...
9. Considering the compounds a)-1) in #5, whicho -1) in #5, which one(s) would give: a band at 2100-2250 cm in the IR? a band at 3200-3600 cm $600 cm' (not extending to 2400 cm ) in the IR? (not extending to 2400 peaks between 6 and 8.5 in the 'H NMR? a positive 2,4 DNP test?