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0.218 gm of the acetyl derivative of a p...

`0.218` gm of the acetyl derivative of a polyhydric acohol (molecular mass = 92) requires `0.168` gm of KOH for hydrolysis. Calculate the number of `(--OH)` groups in the alcohol.

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To solve the problem, we need to determine the number of hydroxyl groups (–OH) in a polyhydric alcohol based on the given data. Here's a step-by-step solution: ### Step 1: Understand the Reaction The acetyl derivative of the polyhydric alcohol reacts with potassium hydroxide (KOH) during hydrolysis. Each hydroxyl group in the alcohol will react with one mole of KOH. ### Step 2: Set Up the Known Values - Mass of the acetyl derivative = 0.218 g - Mass of KOH used for hydrolysis = 0.168 g ...
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