MCQ
For the reaction $2N{O_{2(g)}}$ $\rightleftharpoons$ $2N{O_{(g)}} + {O_{2(g)}}$

$({K_c} = 1.8 \times {10^{ - 6}}\,{\rm{at}}\,\,184\,^\circ C)$

$(R = 0.0831\,kJ/\,(mol.\,K))$

When ${K_p}$ and ${K_c}$ are compared at $184\,^oC$ it is found that

  • ${K_p}$ is greater than ${K_c}$
  • B
    ${K_p}$ is less than ${K_c}$
  • C
    ${K_p} = {K_c}$
  • D
    Whether ${K_p}$ is greater than, less than or equal to ${K_c}$ depends upon the total gas pressure

Answer

Correct option: A.
${K_p}$ is greater than ${K_c}$
(a) ${k_p} = {k_c}{(RT)^{\Delta n}}$

$\Delta n = 3 - 2 = 1$; ${k_p} > {k_c}$.

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