Let's break down the reaction step-by-step: --- ## **Step 1: Identify the Reactants** - **Alcohol:** The given structure is **2-pentanol** (CH₃-CH(OH)-CH₂-CH₂-CH₃). - **Reagent:** Thionyl chloride (SOCl₂) in the presence of pyridine. --- ## **Step 2: Recognize the Reaction Type** - **SOCl₂** is commonly used to convert **alcohols** to **alkyl chlorides**. - **Pyridine** is used as a base to neutralize the HCl produced and to facilitate the reaction. --- ## **Step 3: Predict the Product** - The -OH group of 2-pentanol is replaced by a -Cl atom. So, the product is **2-chloropentane**. --- ## **Step 4: Draw the Major Organic Product** **Structure:** ``` Cl | CH3-CH-CH2-CH2-CH3 ``` Or, in condensed form: **CH₃-CH(Cl)-CH₂-CH₂-CH₃** --- ## **Step 5: Final Answer** ### **Major Organic Product** **2-chloropentane** (CH₃-CH(Cl)-CH₂-CH₂-CH₃) --- **Summary Table:** | Reactant (Alcohol) | Reagent | Product | |-----------------------|-----------------|--------------------| | 2-pentanol | SOCl₂, pyridine | 2-chloropentane | --- **No stereochemistry needs to be considered, as specified.**