Question

In which of the following reaction $K_p > K_c$ ?

• A. $PCl_{3}+Cl_{2}\to PCl_{5}$
• B. $H_{2}+I_{2}\to2HI$
• C. $2SO_{3}\to O_{2}+2SO_{2}$
• D. $N_{2}+3H_{2}\to2NH_{3}$

Answer 1

Answer: (C)

$2SO_{3}\to O_{2}+2SO_{2}$

Answer 2

As $K_{p} = K_{c} \left(RT\right)^{\Delta n}$ So if $\Delta$n = +ve then only, $K_{p} > \,K_{c}$ Where $\Delta\,n$ is the difference in number of moles of gaseous products of gaseous reactants