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Classify each process below by its individual effect on the entropy of the universe, S.
1- A process run infinitesimally slowly at equilibrium and reversed to its original state
2- A constant composition mixture of solid and liquid water at STP (273.15 K and 1 atm)
3- Motion of frictionless pendulum
4- The dissolution of sodium chloride in water
5- Melting ice cream from solid to liquid at 25 degree C
6- Hydrogen peroxide slowing decomposing into water and oxygen
Classify each as either :
– Increases S of the universe
– Does not affect S of the universe
– Decreases S of the universe
Here is my answer :