With the following compounds, which compound(s) would have a POSITIVE 2,4-Dinitrophenylhydrazine test. (showing precipitate). a) 2-butanol...
With the following compounds, which compound(s) would have a POSITIVE 2,4-Dinitrophenylhydrazine test. (showing precipitate).
a) 2-butanol b)benzaldehyde c)cyclohexanone
With the following compounds, which compound(s) would have a POSITIVE for a CHROMIC ACID test (showing precipitate).
a) 2-butanol b)benzaldehyde c)cyclohexanone
With the following compounds, which compound(s) would have a POSITIVE for IODOFORM test (showing precipitate).
a) 2-butanol b)benzaldehyde c)cyclohexanone
Homework Answers
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With the following compounds, which compound(s) would have a
POSITIVE 2,4-Dinitrophenylhydrazine test. (showing
precipitate).
a) 2-butanol...
POST-LAB QUESTIONS 1. A compound of molecular formula CH..0 forms a yellow precipitate with 2,4-dinitrophenylhydrazine reagent...
POST-LAB QUESTIONS 1. A compound of molecular formula CH..0 forms a yellow precipitate with 2,4-dinitrophenylhydrazine reagent and a yellow precipitate with reagents for the iodoform test, draw the structural formula for this compound. 2. What kind of results do you see when the following compounds are mixed together with the given test solution? a) with 2,4-dinitrophenylhydrazine with chromic with chromic acid with 12-KI reagent CH3CH2CH with Tollens' reagent 3. Write the structure of the compound that gives a silver mirror...
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 the 2,4-DNP test? tert-butanol formaldehyde cyclohexanone acetone
5) You have been given an unknown that gives a positive 2,4-dinitrophenylhydrazine test. a) What does...
5) You have been given an unknown that gives a positive 2,4-dinitrophenylhydrazine test. a) What does this positive 2,4 DNP test indicate? b) What subsequent tests could you run to be more specific about the unknown's identity? c) What would you see in the subsequent tests, and what would your observations tell you about the identity of the unknown?
12. Which compound is the strongest acid? 11. Which compound is the strongest base? (A) benzoic a...
12. Which compound is the strongest acid? 11. Which compound is the strongest base? (A) benzoic acid (B) 4-amino-2-methylbenzoic acid ©p-nitrobenzoic acid (A) m-nitroaniline (B) aniline 4-methylaniline 3-bromo-5-nitroaniline 24-dimethylaniline po 13. Which of the following compounds E)3.S-dinitrobenzoic acid is has the 4.ow many Ha atoms are in the compound: 14 cyclohexane-1,3-dione? (A) 2 (B) 4 (C)5 highest number of alpha hydrogen? (A) 2,4-dimethyl-3-hexanone (B) cyclohexanone C) benzaldehyde D) 2-heptanone (E) propanone IS. Which of the following compounds has the16. Which...
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,...
I need help answering the following questions 1) A compound is insoluble in water, soluble in...
I need help answering the following questions
1) A compound is insoluble in water, soluble in conc. H2SO4. It shows positive for the 2,4-DNPH test and negative for Chromic Acid test. What do you think the compound is? (3 pts) a) Isopropyl alcohol b) Butyraldehyde c) 3-pentanone d) butan-1-ol 2) Which compound would give a negative result for Iodoform Test? (3 pts) a) t-butyl alcohol b) Acetophenone c) 2-butanol d) Acetaldehyde 3) Which of the following routes can be used...
12. Which of the following reagents or tests would you use to differentiate between the following...
12. Which of the following reagents or tests would you use to differentiate between the following two compounds? Select only one answer and explain why you selected that answer.) C-H a) Chromic acid b) Benedict's test c) lodoform 13. Which of the following reagents or tests would you use to differentiate between the following two compounds? Sclect only one answer and explain why you selected that answer.) -H a) Chromic acid b) Benedict's test c) lodoform 14. An unknown compound...
Qualitative analysis lab Give structures for the following aromatic compounds. e. p-methylphenol 2. Give structures for...
Qualitative analysis lab
Give structures for the following aromatic compounds.
e. p-methylphenol 2. Give structures for the following aromatic compounds: a. A (C H10) positive 2,4-DNP; positive iodoform. b. B (C,HO) insoluble in NAOH; positive 2,4-DNP; negative iodoform hot KMnO, oxidation yields p-methoxybenzoic acid. c. C (C,H0,) soluble in NaHCO oxidation with KMn0, yields phthalic acid; IR peak at 1690 cm d. D (C,H,0,) soluble in NaHCO oxidation with KMnO, yields phthalic acid; IR peak at 1710 cm e. E...
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
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...
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...
POST-LAB QUESTIONS 1. A compound of molecular formula CH..0 forms a yellow precipitate with 2,4-dinitrophenylhydrazine reagent and a yellow precipitate with reagents for the iodoform test, draw the structural formula for this compound. 2. What kind of results do you see when the following compounds are mixed together with the given test solution? a) with 2,4-dinitrophenylhydrazine with chromic with chromic acid with 12-KI reagent CH3CH2CH with Tollens' reagent 3. Write the structure of the compound that gives a silver mirror...
5) You have been given an unknown that gives a positive 2,4-dinitrophenylhydrazine test. a) What does this positive 2,4 DNP test indicate? b) What subsequent tests could you run to be more specific about the unknown's identity? c) What would you see in the subsequent tests, and what would your observations tell you about the identity of the unknown?
12. Which compound is the strongest acid? 11. Which compound is the strongest base? (A) benzoic acid (B) 4-amino-2-methylbenzoic acid ©p-nitrobenzoic acid (A) m-nitroaniline (B) aniline 4-methylaniline 3-bromo-5-nitroaniline 24-dimethylaniline po 13. Which of the following compounds E)3.S-dinitrobenzoic acid is has the 4.ow many Ha atoms are in the compound: 14 cyclohexane-1,3-dione? (A) 2 (B) 4 (C)5 highest number of alpha hydrogen? (A) 2,4-dimethyl-3-hexanone (B) cyclohexanone C) benzaldehyde D) 2-heptanone (E) propanone IS. Which of the following compounds has the16. Which...
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,...
I need help answering the following questions
1) A compound is insoluble in water, soluble in conc. H2SO4. It shows positive for the 2,4-DNPH test and negative for Chromic Acid test. What do you think the compound is? (3 pts) a) Isopropyl alcohol b) Butyraldehyde c) 3-pentanone d) butan-1-ol 2) Which compound would give a negative result for Iodoform Test? (3 pts) a) t-butyl alcohol b) Acetophenone c) 2-butanol d) Acetaldehyde 3) Which of the following routes can be used...
12. Which of the following reagents or tests would you use to differentiate between the following two compounds? Select only one answer and explain why you selected that answer.) C-H a) Chromic acid b) Benedict's test c) lodoform 13. Which of the following reagents or tests would you use to differentiate between the following two compounds? Sclect only one answer and explain why you selected that answer.) -H a) Chromic acid b) Benedict's test c) lodoform 14. An unknown compound...
Qualitative analysis lab
Give structures for the following aromatic compounds.
e. p-methylphenol 2. Give structures for the following aromatic compounds: a. A (C H10) positive 2,4-DNP; positive iodoform. b. B (C,HO) insoluble in NAOH; positive 2,4-DNP; negative iodoform hot KMnO, oxidation yields p-methoxybenzoic acid. c. C (C,H0,) soluble in NaHCO oxidation with KMn0, yields phthalic acid; IR peak at 1690 cm d. D (C,H,0,) soluble in NaHCO oxidation with KMnO, yields phthalic acid; IR peak at 1710 cm e. E...
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...
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