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1. Consider the following aldehydes and ketones, which you will study in today's experiment. CH3 CH2 CHg-C-CH, CH2- -CH-CH- C-H CH2 Cinnamaldehyde Camphor CH;O. C-H CH- -CH3 HO

1. Consider the following aldehydes and ketones, which you will study in today's experiment. CH3 CH2 CHg-C-CH, CH2- -CH-CH- C-H CH2 Cinnamaldehyde Camphor CH;O. C-H CH- -CH3 HO

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Prelaboratory Questions** 1. Consider the following aldehydes and ketones, which you will study in today’s experiment: - **Camphor**: Structure includes a bicyclic ring with ketone group. - **Cinnamaldehyde**: Structure includes a benzene ring with an aldehyde group. - **Vanillin**: Structure includes a benzene ring with aldehyde and methoxy groups. - **Diacetyl (2,3-butanedione)**: Structure includes two ketone groups in a four-carbon chain. a. Which of the compounds are aldehydes? Which are ketones? b. Which of the aldehydes are aliphatic? Which are aromatic? c. Which compounds would react with Fehling's reagent? With Tollens' reagent? Write equations for all reactions that occur. d. Draw the structural formula of an acetal, formed from one of the aldehydes (your choice), ethyl alcohol, and a trace of acid. e. Which of the compounds would give a positive iodoform test? Write equations for reactions that occur. 2. Draw the structure of the functional group for a hemiacetal. 3. What is evidence for a positive Fehling’s test? For a positive Tollens’ test?
Transcribed Image Text:**Prelaboratory Questions** 1. Consider the following aldehydes and ketones, which you will study in today’s experiment: - **Camphor**: Structure includes a bicyclic ring with ketone group. - **Cinnamaldehyde**: Structure includes a benzene ring with an aldehyde group. - **Vanillin**: Structure includes a benzene ring with aldehyde and methoxy groups. - **Diacetyl (2,3-butanedione)**: Structure includes two ketone groups in a four-carbon chain. a. Which of the compounds are aldehydes? Which are ketones? b. Which of the aldehydes are aliphatic? Which are aromatic? c. Which compounds would react with Fehling's reagent? With Tollens' reagent? Write equations for all reactions that occur. d. Draw the structural formula of an acetal, formed from one of the aldehydes (your choice), ethyl alcohol, and a trace of acid. e. Which of the compounds would give a positive iodoform test? Write equations for reactions that occur. 2. Draw the structure of the functional group for a hemiacetal. 3. What is evidence for a positive Fehling’s test? For a positive Tollens’ test?
**Observations and Results** 1. **Physical Properties** a. **Odors and Uses** - Draw the structure for benzaldehyde and circle the aldehyde functional group. - Describe the odor of benzaldehyde, which is a major component of oil of bitter almonds. - On the basis of the odor, identify the commercial use for vanillin. - Name all of the functional groups that are present in the vanillin molecule. - Would vanillin give a positive ferric chloride test? (Refer to experiment 20.) Explain. - Draw the structure of camphor and circle the carbonyl group. - Give the name of a compound, which you studied in an earlier experiment, that has an odor similar to camphor.
Transcribed Image Text:**Observations and Results** 1. **Physical Properties** a. **Odors and Uses** - Draw the structure for benzaldehyde and circle the aldehyde functional group. - Describe the odor of benzaldehyde, which is a major component of oil of bitter almonds. - On the basis of the odor, identify the commercial use for vanillin. - Name all of the functional groups that are present in the vanillin molecule. - Would vanillin give a positive ferric chloride test? (Refer to experiment 20.) Explain. - Draw the structure of camphor and circle the carbonyl group. - Give the name of a compound, which you studied in an earlier experiment, that has an odor similar to camphor.
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