This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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Step 1: Recall the structure of glycerol. Glycerol is a triol, meaning it has three hydroxyl (-OH) groups. Its chemical name is propane-1,2,3-triol. HO-CH_2-CH(OH)-CH_2-OH Step 2: Understand the role of anhydrous magnesium sulfate. Anhydrous magnesium sulfate (MgSO_4) acts as a dehydrating agent. When heated with glycerol, it removes water molecules from the glycerol structure. Step 3: Illustrate the dehydration mechanism. The formation of acrolein (CH_2=CH-CHO) from glycerol involves two dehydration steps. First, two hydroxyl groups are removed, typically from adjacent carbons, to form an enol intermediate. This enol then tautomerizes to an aldehyde. The overall reaction involves the removal of two molecules of water. HO-CH_2-CH(OH)-CH_2-OH Heat, Anhydrous MgSO_4 CH_2=CH-CHO + 2H_2O The mode of formation involves the dehydration of glycerol, where two molecules of water are eliminated from the glycerol molecule to form the ,-unsaturated aldehyde, acrolein. This typically proceeds via an initial dehydration to form an enol, which then tautomerizes to the more stable aldehyde. 3 done, 2 left today. You're making progress.