1
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
Phosphorus pentachloride dissociates as follows, in a closed reaction vessel
PCl5 (g) $$\leftrightharpoons$$ PCl3 (g) + Cl2 (g)
If total pressure at equilibrium of the reaction mixture is P and degree of dissociation of PCl5 is x, the partial pressure of PCl3 will be
A
$$\left( {{x \over {x + 1}}} \right)P$$
B
$$\left( {{2x \over {1 - x}}} \right)P$$
C
$$\left( {{x \over {x - 1}}} \right)P$$
D
$$\left( {{x \over {1 - x}}} \right)P$$
2
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
The equilibrium constant for the reaction
SO3 (g) $$\leftrightharpoons$$ SO2 (g) + $$1 \over 2$$ O2 (g)
is Kc = 4.9 $$\times$$ 10–2. The value of Kc for the reaction
2SO2 (g) + O2 (g) $$\leftrightharpoons$$ 2SO3 (g) will be :
A
416
B
9.8 $$\times$$ 10-2
C
4.9 $$\times$$ 10-2
D
2.40 $$\times$$ 10-3
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The exothermic formation of ClF3 is represented by the equation:
Cl2 (g) + 3F2 (g) $$\leftrightharpoons$$ 2ClF3 (g); $$\Delta H$$ = -329 kJ
Which of the following will increase the quantity of ClF3 in an equilibrium mixture of Cl2, F2 and ClF3?
A
Increasing the temperature
B
Removing Cl2
C
Increasing the volume of the container
D
Adding F2
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
For the reaction 2NO2 (g) $$\leftrightharpoons$$ 2NO (g) + O2 (g), (Kc = 1.8 $$\times$$ 10-6 at 184oC) (R = 0.0831 kJ/(mol. K))
When Kp and Kc are compared at 184oC , it is found that :
A
Kp is greater than Kc
B
Kp is less than Kc
C
Kp = Kc
D
Whether Kp is greater than, less than or equal to Kc depends upon the total gas pressure
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