2-METHYLHEPTANE - (592-27-8)

Introduction

Name: 2-methylheptane; dimethylhexane
* IUPAC
CAS Number: 592-27-8
Chemical Formula: C8H18
Molar Mass: 114.22852 g
Mass Percent: C 84.116 %; H 15.883 % 
Isomers:  octane  •  isooctane  •  3-methylheptane  •  2,5-dimethylhexane  •  2,2,3,3-tetramethylbutane

Classification

• organic • alkane

Bonding

Double Bonds: 0
Triple Bonds: 0
Sigma Bonds: 25
Pi Bonds: 0
Total: 25
Carboxyl Groups: 0
Hydroxyl Groups: 0
Hybridization: all carbons are sp3
Bonding: polar covalent
Ionic Character: 10.61 %

Thermochemistry

ΔHf° (ℓ): -60.98 kcal/mol 1 = -255.14 kJ/mol
ΔHf° (g): -51.50 kcal/mol 1 = -215.48 kJ/mol
S° (ℓ): 84.16 cal/(mol•K) 2 = 352.13 J/(mol•K)
S° (g): 108.81 cal/(mol•K) 2 = 455.26 J/(mol•K)
ΔGf° (ℓ): 0.92 kcal/mol 3 = 3.85 kJ/mol
ΔGf° (g): 3.05 kcal/mol 3 = 12.76 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): -1306.255 kcal = -5465.40968 kJ
ΔHcomb° (g): -1315.735 kcal = -5505.074 kJ

Reactions

For More Information

Sources

(1) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:84.
(2) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:84.
(3) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:84.
(4) - Kotz, John C. and Treichel, Paul. Chemistry & Chemical Reactivity 4th ed.; Thomson Brooks/Cole: Belmont, CA, 1999; p 151.
(5) - Jolly, William L. The Chemistry of the Non-Metals; Prentice-Hall: Englewood Cliffs, New Jersey, 1966; p 4.