Question

For the reaction:

$A\left(g\right)+B\left(g\right)\rightleftharpoons 2C\left(g\right)+D\left(g\right);K_p=0.05atm$ at $1000K$

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

The correct option is D $\frac{5\times {10}^{-5}}{R}$

For the reaction:

$A\left(g\right)+B\left(g\right)\rightleftharpoons 2C\left(g\right)+D\left(g\right);K_p=0.05atm$ at $1000K$

The value of $K_c$ is represented by $\frac{5\times {10}^{-5}}{R}$

$\Delta n=2+1-(1+1)=1$

$K_p=K_c{\left(RT\right)}^{\Delta n}$

$0.05atm=K_c{(R\times 1000K)}^1$

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

Hence, the correct option is $\text{D}$