What is the main product when propanoic acid is treated with thionyl chloride?

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Question: What is the main product when propanoic acid is treated with thionyl chloride?

Options:

Correct Answer: Propionyl chloride

Solution:

The reaction of propanoic acid with thionyl chloride produces propionyl chloride.

What is the main product when propanoic acid is treated with thionyl chloride?

What is the main product when propanoic acid is treated with thionyl chloride?

Step 1: Identify the starting material, which is propanoic acid (C2H5COOH).
Step 2: Identify the reagent being used, which is thionyl chloride (SOCl2).
Step 3: Understand that thionyl chloride is used to convert carboxylic acids into acyl chlorides.
Step 4: When propanoic acid reacts with thionyl chloride, the -OH group from the acid is replaced by a -Cl group.
Step 5: The product formed from this reaction is propionyl chloride (C2H5COCl).
Step 6: Therefore, the main product of the reaction is propionyl chloride.

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