Chapter 16, Problem 103CP

For the following reactions at constant pressure, predict if

$\Delta H>\Delta E,\Delta H<\Delta E,\text{or}\Delta H=\text{ΔE}$

a. $2\text{HF}\left(g\right)\to {\text{H}}_{\text{2}}\left(g\right)+{\text{F}}_{\text{2}}\left(g\right)$

b. ${\text{N}}_{\text{2}}\left(g\right)+3{\text{H}}_{\text{2}}\left(g\right)\to {\text{2NH}}_{\text{3}}\left(g\right)$

c. ${\text{4NH}}_3\left(g\right)+5{\text{O}}_{\text{2}}\left(g\right)\to \text{4NO}\left(g\right)+{\text{6H}}_{\text{2}}\text{O}\left(g\right)$