UNDECANE - (1120-21-4)

Introduction

Name: undecane; hendecane
* IUPAC
CAS Number: 1120-21-4
Chemical Formula: C11H24 or CH3(CH2)9CH3
Molar Mass: 156.30826 g
Mass Percent: C 84.523 %; H 15.476 % 

Classification

• organic • alkane

Physical Properties

Melting Point:*
-25.6°C 1 = 247.55 K = -14.08°F
Boiling Point:*
194°C 2 = 467.15 K = 381.2°F

* - 1 atm pressure

Bonding

Double Bonds: 0
Triple Bonds: 0
Sigma Bonds: 34
Pi Bonds: 0
Total: 34
Carboxyl Groups: 0
Hydroxyl Groups: 0
Hybridization: all carbons are sp3
Bonding: polar covalent
Ionic Character: 10.61 %

Thermochemistry

ΔHf° (ℓ): -78.05 kcal/mol 3 = -326.56 kJ/mol
ΔHf° (g): -64.60 kcal/mol 3 = -270.29 kJ/mol
S° (ℓ): 109.49 cal/(mol•K) 4 = 458.11 J/(mol•K)
S° (g): 139.48 cal/(mol•K) 4 = 583.58 J/(mol•K)
ΔGf° (ℓ): 5.44 kcal/mol 5 = 22.76 kJ/mol
ΔGf° (g): 9.94 kcal/mol 5 = 41.59 kJ/mol
The heat of combustion is the amount of heat released when one mole of a substance undergoes combustion according to the general reaction equation:
CxHyOz + 0.25(4x+y-2z) O2 (g) → x CO2 (g) + 0.5y H2O (ℓ)

ΔHcomb° (ℓ): -1776.28 kcal = -7432.0088 kJ
ΔHcomb° (g): -1789.73 kcal = -7488.2836 kJ

For More Information

Sources

(1) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 3-326.
(2) - Shriner, Ralph L., Fuson, Reynold C., and Curtin, David Y. The Systematic Identification of Organic Compounds, 4th ed.; John Wiley & Sons: New York, 1962; p 314.
(3) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:94.
(4) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:94.
(5) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:94.