Classify each process by its individual effect on the entropy of the universe, S

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Classify each process by its individual effect on the entropy of the universe, S.

  1. a process run infinitesimally slowly at equilibrium and reversed to it’s original state
  2. solid and liquid water combined together at STP
  3. motion of a frictionless pendulum
  4. titration of sodium hydroxide and hydrochloric acid
  5. ice melting to water above the melting point