Answer to Question #65827 in Physical Chemistry for umar

Question

Question 15 : Which of the following involves a decrease in entropy?
the dissolution of NaCl in water
the evaporation of ethanol
the freezing of liquid water into ice
the sublimation of carbon dioxide

Question 16 : If a chemical reaction has a positive change in entropy, [Math Processing Error]
ΔS
, then
the disorder of the system increases.
the Gibbs free energy is negative.
heat goes from the system into the surroundings.
the reaction is exothermic.

Answer 1

the freezing of liquid water into ice

the disorder of the system increases