MCQ
For the following reaction in gaseous phase $CO + \frac{1}{2}{O_2} \to C{O_2}$; ${K_p}/{K_c}$ is
  • A
    ${(RT)^{1/2}}$
  • ${(RT)^{ - 1/2}}$
  • C
    $(RT)$
  • D
    ${(RT)^{ - 1}}$

Answer

Correct option: B.
${(RT)^{ - 1/2}}$
(b) ${K_p} = {K_c}{[RT]^{\Delta {n_g}}}$

$\Delta {n_g} = 1 - 1.5 = - 0.5$

${K_p} = {K_c}{[RT]^{ - 1/2}}$ $\therefore \,\,\frac{{{K_p}}}{{{K_c}}} = {[RT]^{ - 1/2}}$

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