Two compunds with the formula C4H8O,A+B, are run through test with the following results. predict the...
Two compunds with the formula C4H8O,A+B, are run
through test with the following results. predict the structure of
each.
A) A forms a silver mirror in the tollen's test but does not react
to iodiform.
B) B forms a yellow precipitate with iodiform but does not react in
the tollens test
Homework Answers
(A) Since A forms silver mirror in the tollen's test, it is aldehyde and it does not give iodoform test, so it does not contain CH3 - CO - group.
So, the compound 'A' is CH3CH2CH2CHO
CH3CH2HC2CHO + Ag2O --------> Ag (s) + CH3CH2CH2COOH
tollen's reagent silver mirror
CH3CH2HC2CHO + I2 + NaOH -------> No reaction
(B) B froms yellow precipitate of iodoform.
CH3COCH2CH3 + I2 + NaOH ---------> CHI3 + CH3CH2COONa
Iodoform(yellow ppt.)
CH3COCH2CH3 + Ag2O (tolle's reagent) ---------> no reaction.
So, compound 'B' is CH3COCH2CH3
Add Answer to:
Two compunds with the formula C4H8O,A+B, are run
through test with the following results. predict the...
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...
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Q.4 Two compounds. A and B. have the formula of C,H,O. Determine their condensed structural formulas...
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8. Discuss the results of the Benedict's test. Which compounds gave a positive result, and why?...
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Predict the structure of the following compounds: Formula: C4H8O (All scale is in ppm) (NMR Solvent:...
Predict the structure of the following compounds:
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Solvent: CDCl3)
Calculate the element of unsaturation of the compound.
1H NMR
44 1.o 6.6 5.8 4.0 3. 2.0 Zoom peaks au UUUUUUUUUUUUUUUUUU UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU 6.6 6.5 6.4 6.3 6.2 6.1 6.0 AM LLLLLLLLLLLLL 4.3 4.2 LUUUUUUUUUU 3.7 4.1 4.0 3.9 3.8
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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...
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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,...
2. What is the oxidation product of an aldehyde! Q.4 Two compounds. A and B. have the formula of C,H,O. Determine their condensed structural formulas and names using the following test results. a. Compound A forms a red-orange precipitate with Benedict's reagent but does not react with iodoform. b. Compound B forms a yellow solid in the iodoform lest but does not react with Benedict's reagent.
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Predict the structure of the following compounds:
Formula: C4H8O (All scale is in ppm) (NMR
Solvent: CDCl3)
Calculate the element of unsaturation of the compound.
1H NMR
44 1.o 6.6 5.8 4.0 3. 2.0 Zoom peaks au UUUUUUUUUUUUUUUUUU UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU 6.6 6.5 6.4 6.3 6.2 6.1 6.0 AM LLLLLLLLLLLLL 4.3 4.2 LUUUUUUUUUU 3.7 4.1 4.0 3.9 3.8
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