Question

For the reaction, $A_g+2B_g\rightleftharpoons 3C_g+D_g$; $K_p=0.05atm$ at 1000 K. The value of $K_c$ is represented by ?

• A. ${5\times 10}^{-4}R$
• B. $\frac{5\times {10}^{-4}}{R}$
• C. ${5\times 10}^{-5}R$
• D. $\frac{5\times {10}^{-5}}{R}$

Answer 1

Answer: (D)

$\frac{5\times {10}^{-5}}{R}$

$K_p=K_c[RT{]}^{\Delta n}$

here $\Delta n$ = 4-3 = 1

Therefore $K_p=K_c\left[RT\right]$ or

$K_c=K_p/RT=\frac{5\times {10}^{-5}}{R}$