|Chapter 2 : Alkanes|
Qu 1 : Draw the constitutional isomers of C6H14.
Qu 2 : Draw the constitutional isomers of C5H10.
Qu 3 : Draw the constitutional isomers of C3H6O.
|Qu 4 :
consists of two isomers of octane:
I = 2,2-dimethylhexane, ΔHc = -1304.6 kcal/mol and,
II = 2,2,3,3-tetramethylbutane, ΔHc = -1303.0 kcal/mol.
Knowing that the heats of combustion, ΔHc C (graphite) = -94.05 kcal/mol and ΔHc H2 (gas) = -57.8 kcal/mol, calculate the heat of formation, ΔHf for each of the isomers of octane.
Based on this data, which isomer is the most stable ?
Is this consistent with what you would have predicted ?
|© Dr. Ian Hunt, Department of Chemistry|