The following aldaric acid can lactonize to form two different products. Which ones? CO2H -H lactones но с... HO A O B and C O E and A НО Н OH O но с... -OH -OH CO2H HO OH В HC... HO C O HO C. он HO D O HO C OH HO E OH

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Q: OC Ph₂P H Rh 0 -0 -CO

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Diol

In chemistry there are so many chemical compounds that have a hydroxyl group but a chemical compound having two hydroxyl groups (-OH) is termed as a diol. It also implies the presence of two alcohols whereas polyols contain two or more than two hydroxyl groups (-OH). Glycol or 1,2-diol is an aliphatic diol that has two alcohol groups on adjacent carbon atoms. In industries, the most commonly used diol is ethylene glycol.