Final answer:In organic chemistry, OH is anelectron donatingsubstituent, while CN is an electron withdrawing substituent.Explanation:Inorganic chemistry,substituentscan be classified as eitherelectron donatingorelectron withdrawingbased on their effect on the electron density of a molecule. Electron donating substituents are those that release electrons into a molecule, increasing its electron density. Examples of electron donating substituents include -OH(hydroxyl group) and -NH2 (amino group).On the other hand, electron withdrawing substituents are those that withdraw electrons from a molecule, decreasing its electron density. Examples of electron withdrawing substituents include -CN(cyano group) and -NO2 (nitro group).Therefore, in the given question, OH is an electron donating substituent, while CN is an electron withdrawing substituent.Learn more aboutclassification of substituents as electron donating or electron withdrawinghere:brainly.com/question/33513442#SPJ14...

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