Equilibrium - Result Question 7
####8. In which of the following equilibrium $K_c$ and $K_p$ are not equal?
[2010]
(a) $2 NO(g) \rightarrow N_2(g)+O_2(g)$
(b) $SO_2(g)+NO_2(g) \rightarrow SO_3(g)+NO(g)$
(c) $H_2(g)+I_2(g) \rightarrow 2 HI(g)$
(d) $2 C(s)+O_2(g) \rightarrow 2 CO_2(g)$
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Solution:
- (d) $2 C($ s $)+O_2(g) \rightarrow 2 CO_2(g)$
$\Delta n=2-1=+1$
$\therefore \quad K_c$ and $K_p$ are not equal.
If $\Delta n=0$, then $(R T)^{\Delta n}=1$
$\Rightarrow K_c=K_p$
