Question

Naphthalene, C10H8, melts at 80.0 ˚C; the vapor pressure of the solid is 1.00 torr at 52.6 ˚C, and that of the liquid is 10.0 torr at 85.8 ˚C and 40.0 torr at 119.3 ˚C. Calculate: (a) the enthalpy of vaporization, the normal boiling point, and the entropy of vaporization at the boiling point; (b) the vapor pressure at the melting point (Hint: liquid and solid are in equilibrium there)

Answer 1

The cal Clausils - Clubeyren egueline , len Centteple ( Sheep H = Rei Cat '. = ($1. 2145 5x+tout y anley 18.31 = 48.430 mot- 48, 43 tỷ - 7 - H Aval 1. 02 D+ = The normel boiling point (to in this eg") corresponds to car a wabon preson of to 760 torn'. using date od 19.3°C (Iz) he have a de ) * 9900K . 48430 J molt * 7 = 489 -34 sur boily food is 489.39€ - 216:34

Streep lt 484305 moll. - vaps > Tóū 489.34 K 98197 J K mol-!

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