3. For the following compounds: identify the functional groups suggest two chemical tests you can use in identification provide the expected result for each chemical test selected ii. iii. а. i. ii. H. H. b. i. ii. H. R OR' с. i. ii.

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The image contains chemical structure diagrams for educational purposes.

**Section d:**

- **i.** The diagram shows a general structure for an ester. It features a carbonyl group (C=O) bonded to an oxygen atom, which in turn is bonded to a variable group R′. The other R group is bonded directly to the carbon atom of the carbonyl group. The general formula can be written as RCOOR′.

- **ii.** The structure shown is a ketone. It contains a six-carbon chain with a carbonyl group (C=O) on the second carbon. This specific structure is known as 2-hexanone.

**Section e:**

- **i.** The diagram represents an aromatic compound with a benzene ring bonded to a variable group R. This indicates a general structure for an aryl group.

- **ii.** This structure is a brominated organic compound. It features a chain of carbon atoms with a bromine atom (Br) attached to the second carbon of a secondary butyl group. This configuration suggests a brominated isobutane compound.

These diagrams illustrate basic organic structures commonly introduced in introductory organic chemistry courses.
Transcribed Image Text:The image contains chemical structure diagrams for educational purposes. **Section d:** - **i.** The diagram shows a general structure for an ester. It features a carbonyl group (C=O) bonded to an oxygen atom, which in turn is bonded to a variable group R′. The other R group is bonded directly to the carbon atom of the carbonyl group. The general formula can be written as RCOOR′. - **ii.** The structure shown is a ketone. It contains a six-carbon chain with a carbonyl group (C=O) on the second carbon. This specific structure is known as 2-hexanone. **Section e:** - **i.** The diagram represents an aromatic compound with a benzene ring bonded to a variable group R. This indicates a general structure for an aryl group. - **ii.** This structure is a brominated organic compound. It features a chain of carbon atoms with a bromine atom (Br) attached to the second carbon of a secondary butyl group. This configuration suggests a brominated isobutane compound. These diagrams illustrate basic organic structures commonly introduced in introductory organic chemistry courses.
**Question 3:**

For the following compounds:

i. Identify the functional groups  
ii. Suggest two chemical tests you can use in identification  
iii. Provide the expected result for each chemical test selected  

**a. Compounds:**

i. Structure: Hexan-2-one  
   - **Functional Group:** Ketone  
   - **Chemical Tests:**  
     1. **2,4-Dinitrophenylhydrazine (2,4-DNPH) Test**
        - **Expected Result:** Formation of a yellow/orange precipitate
     2. **Iodoform Test**
        - **Expected Result:** No reaction (negative for ketones without a methyl group attached to the carbonyl)

ii. Structure: Propanal  
   - **Functional Group:** Aldehyde  
   - **Chemical Tests:**  
     1. **Tollens’ Test**
        - **Expected Result:** Formation of a silver mirror on the test tube
     2. **Fehling’s Test**
        - **Expected Result:** Solution turns red due to the formation of a red precipitate

**b. Compounds:**

i. Structure: Ethyne  
   - **Functional Group:** Alkyne  
   - **Chemical Tests:**  
     1. **Bromine Water Test**
        - **Expected Result:** Decolorization of bromine water
     2. **Baeyer’s Test (Potassium Permanganate)**
        - **Expected Result:** Brown precipitate formation

ii. Structure: Ethane  
   - **Functional Group:** Alkane  
   - **Chemical Tests:**  
     1. **Combustion Test**
        - **Expected Result:** Clean combustion, producing carbon dioxide and water
     2. **Halogenation Test (with UV light)**
        - **Expected Result:** Slow reaction forming haloalkanes

**c. Compounds:**

i. Structure: General structure of an Aldehyde  
   - **Functional Group:** Aldehyde  
   - **Chemical Tests:**  
     1. **Tollens’ Test**
        - **Expected Result:** Silver mirror formation
     2. **Fehling’s Test**
        - **Expected Result:** Red precipitate formation

ii. Structure: General structure of an Ester  
   - **Functional Group:** Ester  
   - **Chemical Tests:**  
     1
Transcribed Image Text:**Question 3:** For the following compounds: i. Identify the functional groups ii. Suggest two chemical tests you can use in identification iii. Provide the expected result for each chemical test selected **a. Compounds:** i. Structure: Hexan-2-one - **Functional Group:** Ketone - **Chemical Tests:** 1. **2,4-Dinitrophenylhydrazine (2,4-DNPH) Test** - **Expected Result:** Formation of a yellow/orange precipitate 2. **Iodoform Test** - **Expected Result:** No reaction (negative for ketones without a methyl group attached to the carbonyl) ii. Structure: Propanal - **Functional Group:** Aldehyde - **Chemical Tests:** 1. **Tollens’ Test** - **Expected Result:** Formation of a silver mirror on the test tube 2. **Fehling’s Test** - **Expected Result:** Solution turns red due to the formation of a red precipitate **b. Compounds:** i. Structure: Ethyne - **Functional Group:** Alkyne - **Chemical Tests:** 1. **Bromine Water Test** - **Expected Result:** Decolorization of bromine water 2. **Baeyer’s Test (Potassium Permanganate)** - **Expected Result:** Brown precipitate formation ii. Structure: Ethane - **Functional Group:** Alkane - **Chemical Tests:** 1. **Combustion Test** - **Expected Result:** Clean combustion, producing carbon dioxide and water 2. **Halogenation Test (with UV light)** - **Expected Result:** Slow reaction forming haloalkanes **c. Compounds:** i. Structure: General structure of an Aldehyde - **Functional Group:** Aldehyde - **Chemical Tests:** 1. **Tollens’ Test** - **Expected Result:** Silver mirror formation 2. **Fehling’s Test** - **Expected Result:** Red precipitate formation ii. Structure: General structure of an Ester - **Functional Group:** Ester - **Chemical Tests:** 1
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