Answer : The correct option is, ice melting into liquid water.
Explanation :
Entropy : It measures the disorderedness or randomness of the atoms in the system. Or, it measures the number of possible arrangements of the atoms or molecules in the system.
As we going from solid state to liquid state to gaseous state, the entropy of increases. And as we going from gaseous state to liquid state to solid state, the entropy decreases.
Crystallization of a solute from a solution : In this process the phase changes from liquid to solid state. So, the entropy decreases.
Ice melting into liquid water : In this process the phase changes from solid to liquid state. So, the entropy increases.
Iodine vapor forming solid iodine : In this process the phase changes from gas to solid state. So, the entropy decreases.
Condensing a gas into a liquid : In this process the phase changes from gas to liquid state. So, the entropy decreases.
Hence, the correct option is, ice melting into liquid water.
