Question

Match the reaction from List I with the ratio of value of equilibrium constant in List II.

Answer 1

We know that, $K_P=K_C{\left(RT\right)}^{△n};△n=$ No. of moles gaseous (products - reactants)

(A) $A_2\left(g\right)+3B_2\left(g\right)\rightleftharpoons 2{AB}_3\left(g\right)$

$\Rightarrow △n=2-1-3=-2$

$\Rightarrow K_P=K_C{\left(RT\right)}^{-2}$

(B) $A_2\left(g\right)+B_2\left(g\right)\rightleftharpoons AB\left(g\right)$

$\therefore △n=2-1-1=0$

$\Rightarrow K_P=K_C{\left(RT\right)}^0=K_C$

(C) $A\left(s\right)+3/2B_2\left(g\right)\rightleftharpoons {AB}_3\left(g\right)$

$\therefore △n=1-3/2=-1/2$

$\Rightarrow K_P=K_C{\left(RT\right)}^{-1/2}$

(D) ${AB}_2\left(g\right)\rightleftharpoons AB\left(g\right)+1/2B_2\left(g\right)$

$△n=1+1/2-1=1/2$

$\Rightarrow K_P=K_C{\left(RT\right)}^{1/2}$