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(B) The mechanism for the acid-catalyzed dehydration of alcohols to alkenes involves three steps: $1$. Protonation of the alcohol molecule: The oxygen

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Protonation of alcohol molecule

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(B) The mechanism for the acid-catalyzed dehydration of alcohols to alkenes involves three steps: $1$. Protonation of the alcohol molecule: The oxygen atom of the alcohol group gets protonated by the acid $(H_2SO_4)$ to form an alkyloxonium ion $(R-OH_2^+)$. $2$. Formation of carbocation: The alkyloxonium ion loses a water molecule to form a carbocation. $3$. Formation of alkene: The carbocation loses a proton to form an alkene.

What is the first step in the dehydration of alcohol to form an alkene by heating with concentrated $H_2SO_4$?

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