Si un alcohol primario se calienta a una temperatura mayor de 140-C en presencia de H2SO4 concentrado, que es el catalizador, se obtiene el alqueno correspondiente más agua. Si se hace la anterior reacción con el alcohol 1 -butilico, la ecuación que representa el proceso es

CH₃CH₂CH₂OH → CH₃CH=CH₂ + H₂O

Explanation:

La ecuación que representa la reacción del alcohol 1-butílico (también llamado como 1-butanol o n-butanol) con H₂SO₄ como catalizador a altas temperaturas es:

CH₃CH₂CH₂OH → CH₃CH=CH₂ + H₂O

Los productos son agua y buteno.

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chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.