MCQ
The two substances $A$ and $B$ are in equilibrium with $C$ and $D$ as $2A + B \rightleftharpoons 3C + 2D$ if the initial pressure of $A$ and $B$ in the ratio of $4 : 1$ and at equilibrium partial pressure of $A $and $D$ are equal. Find the correct relation
  • A
    $P = 10 \sqrt{K_p}$
  • $P = 0.4 \sqrt{K_p}$
  • C
    $P =0.4 K_p$
  • D
    $P = 0.4 (K_p)^2$

Answer

Correct option: B.
$P = 0.4 \sqrt{K_p}$
b
$2{\text{A}} + {\text{B}} \rightleftharpoons 3{\text{C}} + 2{\text{D}}$

$4{\text{P}}\quad {\text{P}}\quad 0\quad 0\,\,\,lnitially$

$2\,{\text{P}}\quad 0.5\,{\text{P}}\quad 1.5\,{\text{P}}\,\,2\,{\text{P}}\,\,At\,equilibrium$

${\mathrm{K}_{\mathrm{p}}=\frac{(1.5 \mathrm{P})^{3}(2 \mathrm{P})^{2}}{(2 \mathrm{P})^{2}(0.5 \mathrm{P})}=6.75 \mathrm{P}^{2}}$

${\mathrm{P}=\sqrt{\frac{\mathrm{K}_{\mathrm{P}}}{6.75}}=0.4 \sqrt{\mathrm{K}_{\mathrm{P}}}}$

$(B)$ is correct answer.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free