Chapter 16, Problem 42E

Calculate the equilibrium constant at 25 °C for each of the following reactions from the value △G ° given.

(a) ${\text{I}}_2\left(s\right)+{\text{Cl}}_2\left(l\right)\to 2\text{ICl}\left(g\right)$ $\Delta G°=-10.88\text{kJ}$

(b) ${\text{H}}_2\left(g\right)+{\text{I}}_2\left(s\right)\to 2\text{HI}\left(g\right)$ $\Delta G°=3.4\text{kJ}$

(c) ${\text{CS}}_2\left(g\right)+3{\text{Cl}}_2\left(g\right)\to {\text{CCl}}_4\left(g\right)+{\text{S}}_2{\text{Cl}}_2\left(g\right)$ $\Delta G°=-39\text{kJ}$

(d) ${\text{2SO}}_2\left(g\right)+{\text{O}}_2\left(g\right)\to 2{\text{SO}}_3\left(g\right)$ $\Delta G°=-141.82\text{kJ}$

(e) ${\text{CS}}_2\left(g\right)\to {\text{CS}}_2\left(l\right)$ $\Delta G°=-1.88\text{kJ}$