Answer : The correct options is, (1) \(I_2(s)\rightarrow I_2(g)\)
Explanation:
(1) \(I_2(s)\rightarrow I_2(g)\) :
This reaction shows sublimation process in which the phase changes from solid state to gaseous state at constant temperature.
(2) \(I_2(l)\rightarrow I_2(g)\) :
This reaction shows evaporation process in which the phase changes from liquid state to gaseous state at constant temperature.
(3) \(I_2(s)\rightarrow I_2(l)\) :
This reaction shows melting process in which the phase changes from solid state to liquid state at constant temperature.
(4) \(I_2(l)\rightarrow I_2(s)\) :
This reaction shows freezing process in which the phase changes from liquid state to solid state at constant temperature.
Hence, from this we conclude that the option (1) equation represents sublimation process.
