Classify each process by its individual effect on the entropy of the universe,
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
6 - sublimation of naphthalene (mothballs)