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Pequeña recopilación de preguntas tipo test para Química de las Disoluciones Acuosas (UCV Ciencias del mar)

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Recopilación de siete preguntas tipo test (con soluciones) para el examen de Química de las Disoluciones acuosas, asignatura del segundo cuatrimestre del primer año de la carrera de Ciencias del Mar, de la UCV.

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Uploaded on
September 17, 2020
Number of pages
3
Written in
2018/2019
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Exam (elaborations)
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Examen de QDA Tipo Test

1. El calor de disolución diferencial es

a. El calor desarrollado cuando un mol de soluto se mezcla con n
moles de disolvente

b. El calor desarrollado cuando se adiciona un mol de soluto a
una cantidad de disolución suficientemente grande como para
que su composición no varíe apreciablemente.

c. La capacidad calorífica total de un sistema a presión constante

d. El calor desarrollado cuando un mol de soluto se mezcla con una
gran cantidad de disolvente.

e. La capacidad calorífica total de un sistema a temperatura
constante

2. Para realizar un proceso de liofilización la secuencia correcta es:

a. Calentamiento de la muestra a presión constante, reducción de la
presión hasta niveles inferiores al punto triple a temperatura
constante, y aumento de la temperatura a presión constante.

b. Congelación de la muestra a presión constante, aumento de la
presión hasta niveles superiores al punto triple a temperatura
constante, y aumento de la temperatura a presión constante.

c. Aumento de la presión de la muestra a temperatura constante,
reducción de la presión hasta niveles inferiores al punto triple a
temperatura constante, y aumento de la temperatura a presión
constante.

d. Congelación de la muestra a presión constante, reducción
de la presión hasta niveles inferiores al punto triple a
temperatura constante, y aumento de la temperatura a
presión constante.
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