Which of the following processes would you predict to have an increase in entropy?

condensation of water

freezing water

melting ice

deposition of CO2 (changing from a gas to solid)

Among the choices given, the best answer is the third option. Melting ice shows an increase in entropy. Entropy is the degree of disorderliness in a system. Among the phases, solid has the most ordered structure which means it has the least entropy. The ice melting shows a phase change from solid to liquid. Liquid molecules are more disorganized than the solid thus there is an increase in entropy.