Answered

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6) Determine la concentración de una solución que ha sido preparada añadiendo 80cc de agua a 320cc de solución alcohólica al 20% v/v. Valor: 3 puntos

Sagot :

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Answer:

16% v/v es la nueva concentración de alcohol en la solución

Explanation:

El porcentaje volumen/volumen (% v/v) es definido como 100 veces la relación entre el volumen de soluto (Alcohol en este caso) y el volumen total de la solución (Agua + Alcohol). Para resolver esta pregunta necesitamos hallar el volumen de alcohol y el de agua:

Volumen alcohol:

320cc * (20cc etanol / 100cc) = 64cc etanol

Volumen agua:

80cc + (320cc-64cc) = 336cc agua

% v/v:

64cc / (336cc + 64cc) * 100

= 16% v/v es la nueva concentración de alcohol en la solución

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