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vodka [1.7K]
3 years ago
13

Si tienes una disolución al 30 % en masa, ¿Cuál sería la nueva concentración si añades agua suficiente hasta duplicar su volumen

?
Chemistry
1 answer:
Alika [10]3 years ago
4 0

Answer:

17.6% en masa será la nueva concentración de la solución

Explanation:

Una disolución al 30% en masa contiene 30g de soluto en 100g de solución (Solvente + soluto). Así, la masa de solvente (Agua) es:

100g - 30g = 70g

Dado que la densidad del agua es de 1g/mL, 70g de agua ocupan 70mL.

Si el volumen se duplica, habrán 140mL de agua = 140g de solvente.

Así, la masa total de la solución será 30g + 140g = 170g y el porcentaje en masa será:

30g soluto / 170g solución × 100 =

<h3>17.6% en masa será la nueva concentración de la solución</h3>
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