Question

2. Find AfisH in kJ moll for naphthalene based on the mole fraction and temperature experimental data. Show your reasoning. XN T/(°C) 0.7 60 602 0.8 67 048 .0 0.9 73 1.0 80 XO Does your value agree with the literature value? Explain briefly. 3. Find AfusH in kJ moll for phenanthrene based on the mole fraction and temperature experimental data. Show your reasoning. Xp T/(°C) 0.7 74 0.8 82 0.9 1.0 8996 14 Does your value agree with the literature value? Explain briefly.

Answer 1

29 4 fus be enthalby ot tusion and b mole frachion; then R This laled Schroder Nan Laar laru ahon 353 K en N =0 FN 1 Given; at T: 90'e = A Hus 1 S53 Ttusion 353 to find Hhi's we us e 293469= 340 k; NE.g T : at aiv en; 4 H&us 8 314 in o-9 353 340 13 3uo1353 d213 8-314 91 KTmol- 1911b 4 Tmo l - AHSus .40 Kimol-1 Vall LiteTature -7 nreemeat. The distrepanuy data Close in aTR Thus Value but efuation is for a mixture oYA pure nath taalene becaus

Aa me rOceed in He Shall 3 . 4 t T n to : T 364 Nowy 364 355 9.314 0-223 S55A369 9-314 16958.0.24 Jmol -1 -7 Literature Valu \63-6 KJ mo 69.58 K3 mo 1- tlose agTeement . This is auso in