1) For the reaction , $SO_{2}(g)+\frac{1}{2}O_{2}\rightleftarrows SO_{3}(g)$ If KP= KC (RT)x Where, the symbols have usual meaning , then the value of x is (assuming ideality) A) -1 B) $-\frac{1}{2}$ C) $\frac{1}{2}$ D) 1 Answer: Option BExplanation:For the given reaction, $\triangle n_{g}=n_{p}-n_{R}$ where nP = number of moles of products nR= number of moles of reactants $K_{P}=K_{C}(RT)^{\triangle n_{g}}$ $\triangle n_{g}=-(1/2)$