Sodium acetate spontaneously crystallizes out of a supersaturated solution upon standing or upon the addition of a seed crystal. Which of the following is true for the thermodynamic quantities of this system for thisprocess?(a)ΔS < 0J/K, ΔH < 0 J(b)ΔS < 0J/K, ΔH > 0 J(c)ΔS > 0J/K, ΔH < 0J(d)ΔS > 0J/K, ΔH > 0J

Respuesta :

Answer:

Option (c) is correct.

Explanation:

According to 2nd law of thermodynamics, every spontaneous process is associated with increase in entropy ([tex]\Delta S>0[/tex]).

As sodium acetate crystallizes out spontaneously therefore it is associated with [tex]\Delta S>0[/tex].

During crystallization, bond formation takes place which results evolution of heat. In other words, crystallization phenomenon is exothermic ([tex]\Delta H<0[/tex]).

So, the given crystallization process renders the following thermodynamic quantities- [tex]\Delta S>0[/tex] J/K and [tex]\Delta H<0[/tex] J

Option (c) is correct.