58.8 C is the boiling point of Br2.
At the boiling point you have equilibrium between the liquid phase and vapor phase and
dG = dH - TdS.
dG = 0 because it is equlibrium.
dH vap-- look that up in tables.
You know T, solve for dS. If you want to read more about this look up delta S vaporization on Google.
Calculate the value of ΔS when 1.10mol of Br2(l) is vaporized at 58.8 ∘C
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