Question
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  1. En el ácido Bórico el porcentaje de Boro y Oxigeno es 17.44 y
    respectivamente. Se desea obtener una muestra de este acido haciendo
    reaccionar 120 g de oxígeno, 10 g de Boro al de pureza y 19 g de
    Hidrogeno- Calcule: g de ácido Bórico obtenido, indique que elementos
    están en exceso y en qué cantidad (1pto).

Ask by Morgan Bright. in Venezuela
Mar 17,2025

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Answer

Se obtienen 54.49 g de ácido bórico. El oxígeno y el hidrógeno están en exceso con 91.84 g y 13.72 g respectivamente.

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Bonus Knowledge

Para calcular la cantidad de ácido bórico que se puede obtener, primero determinemos la cantidad de moles de cada reactivo. La fórmula del ácido bórico es .
  1. Cálculo de moles:
    • Moles de Oxígeno ( ):
    • Moles de Boro ( ):
    • Moles de Hidrógeno ( ):
  2. Reacción:
    La reacción de formación del ácido bórico es:
Esto indica que 1 mol de boro reacciona con 3 moles de hidrógeno y 3 moles de oxígeno.
  1. Limitante y exceso:
  • Para Boro:
    Necesitamos y . Disponemos 19 mol de H y 7.5 mol de O.
  • Para Oxígeno:
    La cantidad de O que se requiere para 0.87 mol de Boro es , y tenemos suficiente oxígeno para reaccionar.
  1. Ácido Bórico producido:
    Calculando el ácido bórico que se puede formar:
  • Desde el Boro, podemos obtener de . Eso equivale a:
Entonces:
  • Ácido Bórico obtenido: aproximadamente 53.85 g
  • Elementos en exceso: Oxígeno, ya que solo se requiere 2.61 moles y tenemos 7.5 moles.
  • Cantidad en exceso de Oxígeno:
¡Y ahí lo tienes, pura química en acción!

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