Methylpropanal

Solve the same problem for propane and isobutane (2-methylpropane). The bond matrix is the same as it is for n-butane, but the enthalpy of formation is somewhat different (n-butane) = —127.1 kJ mol vs. (isobutane) = —134.2... 

Similarly by comparing the bond dissociation energies of the two different types of C—H bonds m 2 methylpropane we see that a tertiary radical is 30 kJ/mol (7 kcal/ mol) more stable than a primary radical... 

A similar study of the chlorination of 2 methylpropane established that a tertiary hydrogen is removed 5 2 times faster than each primary hydrogen... 

The benzyhc position m alkylbenzenes is analogous to the allyhc position m alkenes Thus a benzyhc C—H bond like an allyhc one is weaker than a C—H bond of an alkane as the bond dissociation energies of toluene propene and 2 methylpropane attest... 

Chloro 2 methylpropane Isobutyl chloride or 2 methylpropyl chloride 2 Chloro 2 methylpropane tert Butyl chloride or 1 1 dimethylethyl chloride... 

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