# Degrees of freedom of a saturated solution

A saturated solution of Na2SO4 with excess of the solid is present in equilibrium with its vapor in a closed vessel. Calculate the number of degrees of freedom, f, of the system. Ignore the autoprotolysis of water and assume that the salt solvates without ionizing.

F = c - p +2 or use f = c-p +2 -r -a

c = chem species

p = phases

r = independant chemical reactions

a = additional restrictions

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#### Solution Summary

Solution provides a calculation of the degrees of freedom, with the assumption that the salt solvates without ionizing.

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