Question

At constant temperature, the equilibrium constant $\left(K_{p}\right)$ the decomposition reaction, $N _{2} O _{4} \rightleftharpoons NO _{2}$, is expressed by $K_{p}=\frac{4 x^{2} p}{\left(1-x^{2}\right)}$, where, $p=$ pressure, $x=$ extent of decomposition. Which one of the following statement is true?

• A. $K_p $ increases with increase of $p$
• B. $K_p $ increases with increase of $x$
• C. $K_p$ increases with decrease of $x$
• D. $K_ p$ remains constant with change in $p$ and $x$

Answer 1

Answer: (D)

$K_p$ is function of temperature only, does not change with either $p$ or $ x.$