
sel2. Tema 24 equilibrio Quimico
Authored by Jorge Barrera
Chemistry
1st Grade
Used 7+ times

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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
1. Dada las siguientes proposiciones respecto al equilibrio químico, indique verdadero (V) o falso (F).
I. Se lleva a cabo en recipientes abiertos
II. En el equilibrio la velocidad directa es igual a la velocidad inversa
III. La constante de equilibrio se modifica al variar la temperatura.
FFV
FVV
VFF
FVF
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
1. A 200°C, se tiene el siguiente sistema en equilibrio
H2(g) + I2(g) 2HI(g)
En donde las presiones parciales del H2, I2 y HI son respectivamente 5 atm, 1520mmHg y 8 atm.
Determine Kp para el sistema.
6,2
4,2
4,6
6,4
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
1. Para el sistema a 250°C
PCl5(g) PCl3(g) + Cl2(g); Kc=0,015
Si en el estado de equilibrio se cumple que [PCl5]=4[PCl3], ¿Cuál es la concentración en el equilibrio del Cl2?
0,02M
0,05M
0,06M
0,04
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A 123°C, la constante de equilibrio para la siguiente reacción es 0,25.
C(s) + O2(g) CO2(g)
Si en el equilibrio están presentes 0,2M de CO2, ¿Cuál es la concentración del O2 en dicho estado?
0,80M
0,60M
0,08M
0,56M
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Para el equilibrio
3Fe(s) + 4H2O(g) Fe3O4(s) + 4H2(g)
La expresión de la constante de equilibrio Kc es:
a) [Fe]3[H2O]4/Fe3O4][H2]4
a) [Fe+3]/[H2O]4
a) [Fe3O4][H2]4/[Fe]3[H2O]4
a) [H2O]4/[H2]4
a) [H2]4/[H2O]4
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
la reacción 1 tiene Kc = 0,2
la reacción 2 tiene Kc=0,003
la reacción 3 tiene Kc=2
que reacción favorece la obtención de mas producto?
1
2
3
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