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What is the acidic order of o-nitro phenol, m-nitro phenol & p-nitro phenol & why?
Can you give me an example of a substituent that decreases the acidity of phenols?
Sure! One example of a substituent that decreases the acidity of phenols is an alkyl group, such as a methyl group. These groups are electron-donating, which means they increase electron density and make the phenol less acidic. This can be seen in the case of o-cresol, which has a pKa of 10.2, significantly higher than that of phenol (9.9).