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If 5.00 g of NaCl are dissolved in 25.0 g of water, the percent mass (m/m) of this soluton isGroup of answer choices15516.7200.2

Question

If 5.00 g of NaCl are dissolved in 25.0 g of water, the percent mass (m/m) of this soluton isGroup of answer choices15516.7200.2

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Solution

Para calcular el porcentaje en masa (m/m) de una solución, se utiliza la siguiente fórmula:

Porcentaje en masa=(masa del solutomasa de la solucioˊn)×100 \text{Porcentaje en masa} = \left( \frac{\text{masa del soluto}}{\text{masa de la solución}} \right) \times 100

Donde:

  • La masa del soluto (NaCl) es 5.00 g.
  • La masa del solvente (agua) es 25.0 g.
  • La masa de la solución es la suma de la masa del soluto y la masa del solvente.

Primero, sumamos las masas del soluto y del solvente para obtener la masa total de la solución:

Masa de la solucioˊn=5.00g+25.0g=30.0g \text{Masa de la solución} = 5.00 \, \text{g} + 25.0 \, \text{g} = 30.0 \, \text{g}

Luego, aplicamos la fórmula del porcentaje en masa:

Porcentaje en masa=(5.00g30.0g)×100 \text{Porcentaje en masa} = \left( \frac{5.00 \, \text{g}}{30.0 \, \text{g}} \right) \times 100

Porcentaje en masa=(5.0030.0)×100 \text{Porcentaje en masa} = \left( \frac{5.00}{30.0} \right) \times 100

Porcentaje en masa=0.1667×100 \text{Porcentaje en masa} = 0.1667 \times 100

Porcentaje en masa=16.67% \text{Porcentaje en masa} = 16.67 \%

Por lo tanto, el porcentaje en masa (m/m) de la solución es 16.7%.

This problem has been solved

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