Question

What is $K_c$ for the following equilibrium concentration of each substance is :

$2SO_2(g)+O_2\rightleftharpoons2SO_3(g)$
​

Answer 1

As per the question ,

$2SO_2(g)+O_2\rightleftharpoons2SO_3(g)$ (given)

$\: \: \: \: \: \: \: \: \: \: \: \: \: \:$

$K_c = \frac{[SO_3]^2}{[SO_2]^2[O_2]}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \:$

$\: \: \: \: \: = \frac{ ( 1.9)^2M^2}{(0.6)^2(0.82)M^3}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \:$

$\: \: \: \: = 12.229 M^{ - 1}$ (approximately)

$\: \: \: \: \: \: \: \: \: \: \: \: \: \:$

Hence , K for the equilibrium is $12.229M^{-1}$