Answer:
Option C
Explanation:
a) Kp=4px2(4−x2)=px2(∵4>>>x)
∴xα√1p
If p decreases, x increases. Equilibrium is shifted in the forward side. Thus, statement(a) is correct
(b) At the start of the reaction , Q=0 where , Q is the reaction quotient
△G=△G0+2.303RTlogQ
since △G0>0 , thus △G is -ve
Hence, dissociation take place spontaneously,
Thus (b) is correct
(c) If we use x= 0.7 and p=2 bar,
then Kp=4×2(0.7)2[4−(0.7)2]=1.16>1
Thus, (c) is incorrect
(d) At equilibium, △G=0
∴ △G0=−2.303RTlogKp
Since , △G0=+ve
Hence,Kp<1,KC=Kp(RT)
Then KC<1 , Thus (d) is correct