Which reaction occurs with the largest increase in entropy?
A. \( \mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2(s)}+2 \mathrm{KI}_{(s)} \rightarrow \mathrm{PbI}_{2(s)}+2 \mathrm{KNO}_{3(s)} \)
B. \( \mathrm{CaCO}_{3(s)} \rightarrow \mathrm{CaO}{ }_{(s)}+\mathrm{CO}_{2(g)} \)
C. \( 3 \mathrm{H}_{2(g)}+\mathrm{N}_{2(g)} \rightarrow 2 \mathrm{NH}_{3(g)} \)
D. \( \mathrm{H}_{2(g)}+I_{2(g)} \rightarrow 2 H I_{(g)} \)
E. \( 2 \mathrm{H}_{2} \mathrm{O}_{(l)} \rightarrow 2 \mathrm{H}_{2(g)}+\mathrm{O}_{2(g)} \)