The Molar Enthalpies of Fusion and Vaporisation of Some Substances

Secondary 5

The table below gives an exhaustive list of the molar enthalpy of fusion $( \Delta H_{fus}$ ) and vaporisation $( \Delta H_{vap})$ of various substances, measured under standard conditions at SATP (standard ambient temperature and pressure), i.e. at 25°C and 101.3 kPa.

Name	$\Delta H_{fus}$ $\text{(kJ/mol)}$	$\Delta H_{vap}$ $\text{(kJ/mol)}$	Name	$\Delta H_{fus}$ $\text{(kJ/mol)}$	$\Delta H_{vap}$ $\text{(kJ/mol)}$
Aluminium $\small (Al)$	$10.79$	$294$	Krypton $\small (Kr)$	$1.64$	$9.08$
Silver $\small (Ag)$	$11.28$	$258$	Magnesium $\small (Mg)$	$8.48$	$128$
Argon $\small (Ar)$	$1.18$	$6.43$	Manganese $\small (Mn)$	$2.91$	$221$
Nitrogen $\small (N_2)$	$0.71$	$5.57$	Mercury $\small (Hg)$	$2.29$	$59.1$
Beryllium $\small (Be)$	$7.90$	$297$	Neon $\small (Ne)$	$0.33$	$1.71$
Boron $\small (B)$	$50.2$	$480$	Nickel $\small (Ni)$	$17.04$	$377.5$
Carbon $\small (C)$ (graphite)	$117$	-	Octasulfur $\small (S_8)$	$1.72$	$45$
Bromine $\small (Br_2)$	$10.57$	$26.96$	Gold $\small (Au)$	$12.72$	$324$
Chlorine $\small (Cl_2)$	$6.40$	$20.41$	Platinum $\small (Pt)$	$22.17$	$469$
Fluorine $\small (F_2)$	$0.51$	$6.62$	Lead $\small (Pb)$	$4.78$	$179.5$
Hydrogen $\small (H_2)$	$0.12$	$0.90$	Radon $\small (Rn)$	$3.25$	$18.10$
Iodine $\small (I_2)$	$15.52$	$41.57$	Scandium $\small (Sc)$	$14.1$	$332.7$
Oxygen $\small (O_2)$	$0.44$	$6.82$	Selenium $\small (Se)$	$6.69$	$95.48$
Chromium $\small (Cr)$	$21.0$	$339.5$	Silicium $\small (Si)$	$50.21$	$359$
Cobalt $\small (Co)$	$16.06$	$377$	White phosphorus $\small (P_4)$	$0.66$	$12.4$
Copper $\small (Cu)$	$12.93$	$300.4$	Titanium $\small (Ti)$	$14.15$	$425$
Tin $\small (Sn)$	$7.17$	$296.1$	Tungsten $\small (W)$	$52.31$	$806.7$
Iron $\small (Fe)$	$13.81$	$340$	Uranium $\small (U)$	$9.14$	$417.1$
Gallium $\small (Ga)$	$5.58$	$254$	Vanadium $\small (V)$	$21.5$	$459$
Germanium $\small (Ge)$	$36.94$	$334$	Xenon $\small (Xe)$	$2.27$	$12.57$
Helium $\small (He)$	$0.014$	$0.08$	Zinc $\small (Zn)$	$7.07$	$123.6$