A

\[a A_{(g)}+b B_{(g)} \rightleftharpoons c C_{(g)}+d D_{(g)}\]

B

\[a A_{(s)}+b B_{(g)} \rightleftharpoons c C_{(g)}\]

C

\[A_{(s)}+b B_{(g)} \rightleftharpoons c C_{(s)}+d D_{(g)}\]

D

\[A_{(g)}+b B_{(g)} \rightleftharpoons c C_{(l)}\]

E

\[A_{(s)} \rightleftharpoons c C_{(l)}+d D_{(g)}\]