Question

Calculate the value of equilibrium constant of the reaction at $\text{22}\text{7}^{o}C$ , if the $\Delta G^{o}$ for the reaction $X+Y\rightleftharpoons Z$ is - 4.606 kcal . $\left(\right.R=\text{2.0}cal.mol^{- 1}K^{- 1}\left.\right)$

• A. 100
• B. 10
• C. 2
• D. 0.01

Answer 1

Answer: (A)

$\Delta G^{o}=-\text{2.303}RT\text{log}K$

$-\text{4.606}=-\text{2.303}\times \text{0.002}\times \text{500}\text{log}K$

$\text{log}K=2,K=\text{100}$ .