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563 okmarks People Window Help Check Cours CChemHome CHEM HessCours W Greek G tange cms/mod/ibis/view.php?id-2502978 Print Calalator Pende Table stion 14 of 14 Mapdd Using the tollowing data, Compound Melting point (lmBoaing poi( Compound | Melting point (.C) | ha (kJrnol) | Boiling point (C) | Big (kJmol) | 4.577 1.991 2.406 25.18 17.53 19.27 21.16 19.54 HF HC HBr86.96 -114.3 -84.9 -67.0 Hl -50.91 2.871 35.38 calculate ASus and &Sap; for Hi. Number /(K mol J/(K mol Determine the entropy change when 3,60 mol of Hi(s) melts at atmospheric pressure. Number AS- 763 J/K about us careers partners privacy policy terms of use contact us heip Show Ailx

Explanation / Answer

dSfus for HI = dHfus/Tfus of HI = 2.871/(-86.96+273) = 0.01543 kJ/K-mol = 1.54 J/K-mol

dSvap for HI = dHvap/Tvap of HI = 21.16/(-35.38+273) = 0.089049 J/K-mol

2)

entropy when 3.6 mol of HI melts

then use dS fus

S = 1.54 J/mol*K * 3.6 mol = 5.544 J/mol

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