13.2 Exercise 20

Convert the values of K_c to values of K_P or the values of K_P to values of K_c.

(a) $\text{N}_{2} \left(g\right) + 3 \text{H}_{2} \left(g\right) \rightleftharpoons 2 \text{NH}_{3} \left(g\right) K_{c} = 0.50 \text{at} 400 °\text{C}$

(b) $\text{H}_{2} \left(g\right) + \text{I}_{2} \left(g\right) \rightleftharpoons 2 \text{HI} \left(g\right) K_{c} = 50.2 \text{at} 448 °\text{C}$

(c) $\text{Na}_{2} \text{SO}_{4} \cdot 10 \text{H}_{2} \text{O} \left(s\right) \rightleftharpoons \text{Na}_{2} \text{SO}_{4} \left(s\right) + 10 \text{H}_{2} \text{O} \left(g\right) K_{P} = 4.08 \times 10^{−25} \text{at} 25 °\text{C}$

(d) $\text{H}_{2} \text{O} \left(l\right) \rightleftharpoons \text{H}_{2} \text{O} \left(g\right) K_{P} = 0.122 \text{at} 50 °\text{C}$