Monday, January 24, 2011

METAL OF ZINC BASIC DATA


ATOMIC NUMBER30
ATOMIC WEIGHT65.37
DENSITY(AT 25°C)7140 kg/m3
MELTING POINT419.5°C (692.7 K)
BOILING POINT(760 mm Hg907°C(1180 K)
MODULUS OF ELASTICITY7x104 MN/m2
SPECIFIC HEAT (20°C)0.382 kJ/kg.K
LATENT HEAT OF FUSION(419.5°C)100.9 kJ/kg
LATENT HEAT OF VAPORIZATION(906°C)1.782MJ/kg
HEAT CAPACITY 
SolidCp = 22.40 + 10.5 x 10-3 TJmol-1(298 - 692.7 K)
Liquid
Cp = 31.40 Jmol-1
Gas
Cp = 20.80 Jmol-1
LINEAR COEFFICIENT OF THERMAL EXPANSION (polycrystalline 20-250°C)
39.7 µm/m.K
VOLUME COEFFICIENT OF THERMAL EXPANSION(20-400°C)0.89 x 10 -6/K
THERMAL CONDUCTIVITY : solid (18°C)113W/m.K
ELECTRICAL RESISTIVITY(polycrystalline at 20° C)5.9mVm
STANDARD ELECTRODE POTENTIAL(against H2 electrode)- 0.762 V

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