Which process involves an increase in entropy?
crystallization of a solute from a solution
ice melting into liquid water
iodine vapor forming solid iodine
condensing a gas into a liquid

Answer : The correct option is, ice melting into liquid water.

Explanation :

Entropy : It is defined as the measurement of randomness or disorderedness of the atoms in a system.

The order of entropy will be,

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.

thats how its supposed to be