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79<br />

ตารางผนวกที่ จ1 สมบัติทางกายภาพและโครงสรางของเอทิลแอลกอฮอล และน้ํา<br />

Molecular<br />

size<br />

Molar<br />

mass<br />

Density<br />

and phase<br />

Melting<br />

point<br />

Boiling<br />

point<br />

Heat<br />

capacity<br />

เอทิลแอลกอฮอล น้ํา<br />

bond angles :(H--C--H) =108.6;<br />

(C--O--H) = 108.5;<br />

(C--C--C) = 109.5<br />

bond length : R(C--C) = 154 pm;<br />

R(C--H) =109 pm;<br />

R(C--O) = 1.43 pm;<br />

R(O--H) = 0.94 pm<br />

46.07 g/mol 18.02 g/mol<br />

0.789 g/cm 3 , liquid 1 g/cm 3 , liquid<br />

-114.3 °C (158.8 K) 32 °F, 0 °C (273.15 K)<br />

78.4 °C (351.6 K) 212 °F, 100 °C (373.15 K)<br />

13.64 J/mol ° C<br />

60.24 J/mol ° C<br />

Molecular<br />

non-linear bent<br />

non-linear bent<br />

shape<br />

Dipole<br />

1.69 D (gas) 1.85 D<br />

moment<br />

Viscosity 1.200 cP at 20 °C 1 mPa·s at 20 °C

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