Problema 7
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Balance, materia, energia

Balance, materia, energia

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    Problema 7 Problema 7 Presentation Transcript

    • Problema 7
      Las mascaras de O₂ para producir O₂, en situaciones de emergencia contienen KO₂ que reacciona con el CO₂ y el H₂O del aire exhalado para dar O₂, de acuerdo a la reacción:
      4KO₂ + 2H₂O + 4CO₂ 4KHCO₃ + 3O₂
      Si una persona que tiene una de éstas máscaras exhala 0.707g de CO₂ por minuto, ¿Cuántos g de KO₂ consume en 5min?
    • SOLUCIÓN:
      CO₂ exhalado en 5 minutos
      g de CO₂
      min
      0.707
      5 min. = 3.535g de CO₂
      3.535g de CO₂
      44 g/mol
      moles de CO₂ =
      =0.0803 moles de CO₂
      De la reacción tenemos:
      4 moles KO₂
      4 moles de CO₂
      0.0803 moles de CO₂=0.0803 moles de KO₂
      g
      mol
      0.0803 moles de KO₂
      71.1
      =5.712 g de KO₂