
Cuestionario de Equilibrio Químico
Authored by Alvaro Alvarez
Chemistry
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿Cual es la expresion correcta de la constante de equilibrioKc para la reaccion: N2(g) + 3H2(g)⇌2NH3(g)
Kc = [N2][H2]3[NH3]2
Kc = [NH3]2[N2][H2]3
Kc = 2[NH3][N2]+3[H2]
Kc = [NH3]2−[N2][H2]3
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La reaccion de sintesis de amoniaco es exotermica. Segun el principio de Le Chatelier, ¿que efecto tiene aumentar la temperatura?
Favorece la formacion de mas NH3
Desplaza el equilibrio hacia los reactivos
No tiene efecto
Aumenta la constanteKc
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Por que en el proceso de Haber se utiliza una presion alta?
Para aumentar la velocidad de reaccion
Porque hay mas moles de gas en productos
Porque hay menos moles de gas en productos, favoreciendo a los productos
Para disminuir el costo energetico
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Si se a ̃nade mas H2 al sistema en equilibrio, ¿que sucede?
El equilibrio no cambia
Se forma mas N2
Se consume NH3
El sistema produce mas NH3 para contrarrestar el cambio
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Que representa el punto de equilibrio en una grafica de concentracion vs. tiempo?
Que la reaccion se detuvo
Que las concentraciones de reactivos y productos son iguales
Que las velocidades directa e inversa son iguales
Que ya no hay productos
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿Por que en la industria no se opera el proceso de Haber a 300 K?
Porque es demasiado caro enfriar
Porque la reaccion seria muy lenta, aunque el equilibrio favorezca al producto
Porque se descompone el amoniaco
Porque no hay suficiente N2 en el aire
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿Que factor afecta el valor de la constante de equilibrioKc?
Cambios en la concentracion
Cambios en la presion
Cambios en la temperatura
Presencia de un catalizador
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