The polar nature of the O-H bond contributes to the acidic character of alcohols. Electron-releasing groups like –CH₃ and –C₂H₅ decrease the acid strength by increasing electron density on oxygen.
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The polarity of the O-H bond in alcohols contributes to their acidity. The oxygen atom is more electronegative than hydrogen, creating a polar O-H bond. In acidic conditions, the oxygen can donate its electron pair to form a hydronium ion (H₃O⁺), leaving a positively charged oxygen. The polar nature of the O-H bond enhances the ability of the oxygen atom to release a proton (H+), making alcohols weak acids. The more polar the O-H bond, the more readily the proton can be donated, affecting the acidity of the alcohol.