Question

$A\rightleftharpoons B+C$
Time $t$ $\infty$
Total pressure of $(B+C)$ $P_2$ $P_3$
Find equilibrium constant $k$.

• A. $k=\frac{1}{t}ln\frac{P_3}{2(P_3-P_2)}$
• B. $k=\frac{1}{t}ln\frac{P_2}{2(P_3-P_2)}$
• C. $k=\frac{1}{t}ln\frac{P_3}{2(P_3+P_2)}$
• D. None of these

Answer 1

The correct option is A $k=\frac{1}{t}ln\frac{P_3}{2(P_3-P_2)}$

$a=P_3$
$x=2P_2-P_3$
$x=P_3-2(P_3-P_2)$
$a-x=2(P_3-P_2)$
$k=\frac{1}{t}ln\frac{a}{a-x}$
$k=\frac{1}{t}ln\frac{P_3}{2(P_3-P_2)}$