List of top Chemistry Questions on Equilibrium Constant asked in KEAM

The reaction between N$_2$ and O$_2$ is carried out in a sealed vessel at $300,K$. At equilibrium, $[N_2]=2\times10^{-3}M$, $[O_2]=4\times10^{-3}M$ and $[NO]=2\times10^{-3}M$. What is the value of $K_p$ for the reaction $N_2(g)+O_2(g)\rightleftharpoons2NO(g)$ at $300,K$? $(R=0.08,bar,lit,mol^{-1}K^{-1})$

\( \text{X}_2 + \text{O}_2 \rightleftharpoons 2\text{XO} \)
Concenttration of \( \text{X}_2 \) and \( \text{O}_2 \) are \( 4\times 10^{-3} \) and \( 3\times 10^{-3} \) respectively. Equilibrium concentration of XO (Kc = 0.5)