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Calculate the molarity of a solution prepared by mixing 250 mL of 0.75 M H2SO4 with 150 mL of water

Question

Calculate the molarity of a solution prepared by mixing 250 mL of 0.75 M H2SO4 with 150 mL of water

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Solution

Para calcular la molaridad de la solución resultante, primero debemos determinar la cantidad de moles de H2SO4 en la solución inicial y luego el volumen total de la solución final.

  1. Calcular los moles de H2SO4 en la solución inicial:

    • Molaridad (M) = 0.75 M
    • Volumen (V) = 250 mL = 0.250 L (convertido a litros)

    Moles de H2SO4 = Molaridad × Volumen Moles de H2SO4 = 0.75 M × 0.250 L Moles de H2SO4 = 0.1875 moles

  2. Calcular el volumen total de la solución final:

    • Volumen inicial de H2SO4 = 250 mL
    • Volumen de agua añadido = 150 mL
    • Volumen total = 250 mL + 150 mL = 400 mL = 0.400 L (convertido a litros)
  3. Calcular la molaridad de la solución final:

    • Moles de H2SO4 = 0.1875 moles
    • Volumen total = 0.400 L

    Molaridad final (M) = Moles de soluto / Volumen de solución Molaridad final (M) = 0.1875 moles / 0.400 L Molaridad final (M) = 0.46875 M

Por lo tanto, la molaridad de la solución preparada es aproximadamente 0.469 M.

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