58. Which of the following is a spontaneous process takes place on initiation ?
(1) Dissolution of common salt in water.
(2) Reaction between methane and oxygen to form CO4 and water.
(3) Evaporation of water in an open vessel.
(4) All of these.
59. Select the correct statement.
(1) During hydration the physical state of the sold does not change.
(2) During dissolution , the physical state of solid changes.
(3) Enthalpy of formation of an atom is nearly half of the bond dissociation energy of gaseous diatomic molecule.
(4) All of these.
