Partial pressures of A, B, C and D on the basis of gaseous system… - Vidyadip

MCQ

Partial pressures of $A$, $B$, $C$ and $D$ on the basis of gaseous system $A + 2B$ $\rightleftharpoons$ $C + 3D$ are $A = 0.20$; $ B = 0.10$; $C = 0.30$ and $D = 0.50\, atm$. The numerical value of equilibrium constant is

A
$11.25$
✓
$18.75$
C
$5$
D
$3.75$

✓

Answer

Correct option: B.

$18.75$

(b) $A + 2B$ $ \rightleftharpoons $ $C + 3D$

$K = \frac{{[{P_C}]\,\,{{[{P_D}]}^3}}}{{[{P_A}]\,\,{{[{P_B}]}^2}}} = \frac{{0.30 \times 0.50 \times 0.50 \times 0.50}}{{0.20 \times 0.10 \times 0.10}} = 18.75$

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