The image depicts two chemical reaction schemes labeled as "a" and "b." ### Reaction a: - **Starting Material:** A ketone with a three-carbon chain. - **Reagents:** 1. **NaCN (Sodium Cyanide)** 2. **H₃O⁺ (Hydronium Ion)** **Description:** This suggests a cyanohydrin formation and subsequent hydrolysis. The detailed product is not shown in the image. ### Reaction b: - **Starting Material:** A cyclopentanone (cyclic ketone with five carbon atoms). - **Reagents:** - **xs. (excess) Ethane-1-thiol (CH₃CH₂SH)** - **H₂SO₄ (Sulfuric Acid)** **Description:** This likely involves the introduction of a thiol group under acidic conditions. The precise transformation in the product is not visible. ### Diagrams: - Both areas for reaction products are blanked out, indicating that the products are not detailed in the image. The first reaction suggests typical steps for nucleophilic addition, followed by acid-catalyzed hydrolysis. The second involves thiol addition facilitated by an acidic catalyst. This setup provides a framework for discussing reaction mechanisms involving carbonyl compounds and nucleophilic addition, highlighting standard organic synthesis techniques.

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Hello, I do not understand these questions and I am stuck. May I get help please?? Question: Draw the MAJOR organic product(s) for the following reactions. If no reaction occurs state no reaction in the box provided
The image depicts two chemical reaction schemes labeled as "a" and "b."

### Reaction a:
- **Starting Material:** A ketone with a three-carbon chain.
- **Reagents:**
  1. **NaCN (Sodium Cyanide)**
  2. **H₃O⁺ (Hydronium Ion)**

**Description:** This suggests a cyanohydrin formation and subsequent hydrolysis. The detailed product is not shown in the image.

### Reaction b:
- **Starting Material:** A cyclopentanone (cyclic ketone with five carbon atoms).
- **Reagents:**
  - **xs. (excess) Ethane-1-thiol (CH₃CH₂SH)**
  - **H₂SO₄ (Sulfuric Acid)**

**Description:** This likely involves the introduction of a thiol group under acidic conditions. The precise transformation in the product is not visible.

### Diagrams:
- Both areas for reaction products are blanked out, indicating that the products are not detailed in the image. The first reaction suggests typical steps for nucleophilic addition, followed by acid-catalyzed hydrolysis. The second involves thiol addition facilitated by an acidic catalyst.

This setup provides a framework for discussing reaction mechanisms involving carbonyl compounds and nucleophilic addition, highlighting standard organic synthesis techniques.
Transcribed Image Text:The image depicts two chemical reaction schemes labeled as "a" and "b." ### Reaction a: - **Starting Material:** A ketone with a three-carbon chain. - **Reagents:** 1. **NaCN (Sodium Cyanide)** 2. **H₃O⁺ (Hydronium Ion)** **Description:** This suggests a cyanohydrin formation and subsequent hydrolysis. The detailed product is not shown in the image. ### Reaction b: - **Starting Material:** A cyclopentanone (cyclic ketone with five carbon atoms). - **Reagents:** - **xs. (excess) Ethane-1-thiol (CH₃CH₂SH)** - **H₂SO₄ (Sulfuric Acid)** **Description:** This likely involves the introduction of a thiol group under acidic conditions. The precise transformation in the product is not visible. ### Diagrams: - Both areas for reaction products are blanked out, indicating that the products are not detailed in the image. The first reaction suggests typical steps for nucleophilic addition, followed by acid-catalyzed hydrolysis. The second involves thiol addition facilitated by an acidic catalyst. This setup provides a framework for discussing reaction mechanisms involving carbonyl compounds and nucleophilic addition, highlighting standard organic synthesis techniques.
Expert Solution
Step 1: Predict arrow movement

An arrow always depicts from a region of high electron density to low electron density ; that is tail depicts region of high electron density and head depicts region of low electron density.

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