Chemistry - Chemical Equilibrium Question with Solution | TestHub

$$K_p=K_c(RT{)}^{\Delta n}$$ $\Delta n=$ change in number of moles If $\Delta n=$ positive then $K_p$ will be greater than $K_c$. $$\begin{array}{ll}{\mathrm{PCl}}_3+{\mathrm{Cl}}_2\to {\mathrm{PCl}}_5,& \Delta n=1-2=-1;K_p<K_c\\ {\mathrm{H}}_2+{\mathrm{I}}_2\to 2\mathrm{HI},& \Delta n=0;K_p=K_c\\ 2{\mathrm{SO}}_3\to {\mathrm{O}}_2+2{\mathrm{SO}}_2,& \Delta n=1;K_p>K_c\\ {\mathrm{N}}_2+3{\mathrm{H}}_2\to 2{\mathrm{NH}}_3;& \Delta n=-2;K_p<K_c\end{array}$$