Question

If the equilibrium constant for ${ N2(g) + O2(g) <=> 2NO(g)}$ is K, the equilibrium constant for ${ \frac{1}{2} N_2 (g) + \frac{1}{2} O_2 (g) <=> NO(g) }$ will be :

• A. $K$
• B. $K^2$
• C. $K^{1/2}$
• D. $\frac{1}{2} K$

Answer 1

Answer: (C)

$K^{1/2}$

Answer 2

${N_2(g) + O_2(g) <=> 2NO(g) ; K}$
${\frac{1}{2} N_2 (g) + \frac{1}{2}O_2 (g) <=> NO(g) ; K'}$
when a reaction is multiplied by 1/2 then
$K' = (K)^{1/2}$