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 of the system. Also, identify the independent variables.

I’ve asked my friends and we all got different answers. It’s a question we took off the net to help us study for the upcoming final.

One Response to “Physical Chemistry, how many degrees of freedom in this system?”

1. ADICHEM on December 3rd, 2008 12:37 am

   no. of componenents = 2 (Na2SO4 and water - as each phase can be described by these two components only)

   no. of phases = 3 ( solid and liquid and vapor)

   degrees of freedom = 2-3+2 = 1

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