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Part A Calculate the Agusse of Br2 using the following data. Tr-265.9 K , ΔfsHe-10.57 kJ mol-1 Express your answer using three significant figures. JK mol 1 Submit My Answers Give Up


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Answer #1

Answer

39.75J/K mol

Explanation

Standard Gibbs free energy (∆fG°) is given by the following equation

∆fusG° = ∆fusH° - (Tf × ∆fusS°)

for phase change

∆fusG° = 0

Therefore,

∆fusH° - (Tf × ∆fusS°) = 0

∆fusS° = ∆fusH°/Tf

= 10570(J/mol)/265.9K

= 39.75J/K mol

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