
Entalpías y Ley de Hess
Authored by Rene 18
Chemistry, Science
1st - 3rd Grade
12 Questions
Used 39+ times

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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En la entalpía de formación (o calor de formación), Hf, donde el subíndice f indica que la sustancia....
se formó a partir de sus elementos constitutivos
se formó al interactuar con otra sustancia
no tuvo cambio alguno
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El cambio de entalpia que se produce en una reacción química es:
la entalpía estándar
la entalpía de formación
la entalpía de reacción
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La entalpia de reacción se escribe a menudo como ΔHrxn
Verdadero
Falso
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La entalpía puede medirse en:
Julios, kelvin
Julios, calorías y BTU
calorías, watts
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2H2(g) + O2(g) ------------- 2H2O(g) H= -483.6kJ
El signo negativo de ΔH indica que esta reacción es endotérmica.
verdadero
Falso
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El calor que absorbe o libera un sistema sometido a
presión constante se conoce como
Ninguna de las anteriores
Ley de Hess
Entalpía
Entropía
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un ejemplo de entalpía de formación es la unión de oxígeno (O) e hidrógeno (H) para formar agua (H2O)
Verdadero
Falso
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