Which Reaction Would You Expect to Have the Largest Energy $\Delta$

question 106

Multiple Choice

Which reaction would you expect to have the largest energy of activation? $\Delta$ H° (kJ mol^-1)

• A) CH₃· + CH₃· \(\rightarrow\)CH₃CH₃ -378
• B) CH₃· + Br· \(\rightarrow\)CH₃Br -130
• C) CH₄ + I· \(\rightarrow\)CH₃· + HI +142
• D) CH₄ + Br· \(\rightarrow\)CH₃· + HBr +104
• E) CH₄ + Cl· \(\rightarrow\)CH₃· + HCl +8

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Definitions:

Symmetry

A characteristic where an object or design is made up of exactly similar parts facing each other or around an axis.

Unit of Measurement

A definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same quantity.

Modality

The number of peaks or high points in the frequency distribution of a dataset.

Variability

The degree to which data points in a distribution or set diverge from the central value (mean or median), indicating how spread out the data are.