Mejia Estrada
05/16/2024 · Junior High School

Las reacciones de combinación o sintesis suceden al combinarse dos elementos químicos para formar un compuesto. De las reacciones dadas a continuación todas son por combinación, EXCEPTO: A. \( \mathrm{Cl}_{2}+\mathrm{H}_{2} \rightarrow 2 \mathrm{HCl} \) B. \( 2 \mathrm{Ca}+\mathrm{O}_{2} \rightarrow 2 \mathrm{CaO} \) C. \( 4 \mathrm{P}+\mathrm{O}_{2} \rightarrow 2 \mathrm{P}_{2} \mathrm{O}_{3} \) D. \( \mathrm{Mg}+\mathrm{AlCl}_{2} \rightarrow \mathrm{MgCl}_{2}+\mathrm{Al} \)

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La opción incorrecta es D. \( \mathrm{Mg}+\mathrm{AlCl}_{2} \rightarrow \mathrm{MgCl}_{2}+\mathrm{Al} \) porque es una reacción de desplazamiento, no de combinación.

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