Select the single best answer Report probi Carbon carbon bond dissociation entha

Question

Select the single best answer Report probi Carbon carbon bond dissociation enthalpies have been measured for many alkanes. Without referring to a table of bond dissociation enthalpy values, identify whether propane or 2-methy lpropane has the lower carbon-carbon bond dissociation enthalpy, and the reason for your choice. Hint O 2-Methylpropane, because it cleaves into a secondary radical and one methyl radical, while propane yields a primary radical and one methyl radical. The secondary isopropyl radical is more stable than the primary radical. Propane, because it cleaves into a secondary radical and one methyl radical, while 2-methylpropane yields a primary radical and one methyl radical. The secondary radical is less stable than the primary radical Propane, because it cleaves into a primary radical and one methyl radical, while 2-methylpropane yields a secondary radical and one methyl radical. The primary radical is more stable than the secondary radical. 2-Methylpropane. because it cleaves into four methyl radicals, while propane yields three methyl radicals. Formation of four methyl radicals releases more energy than formation of three.

Explanation / Answer

Answer:

2-Methylpropane has the lower carbon-carbon bond dissociation enthalpy than propane so the correct option is -

2-Methylpropane, because it cleaves into a secondary radical and one methyl radical, while propane yields a primary radical and one methyl radical. The secondary isopropyl radical is more stable than the primary radical.

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