The Activation Energy of a Certain Uncatalyzed Reaction Is 64

question 12

Multiple Choice

The activation energy of a certain uncatalyzed reaction is 64 kJ/mol.In the presence of a catalyst, the E_a is 55 kJ/mol.How many times faster is the catalyzed than the uncatalyzed reaction at 400°C? Assume that the frequency factor remains the same.

• A)5.0 times
• B)1.16 times
• C)15 times
• D)2.0 times
• E)0.2 times

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Definitions:

Mouth

The opening in an animal's body that is the beginning of the digestive tract, through which food is ingested.

Brush Border

A microvillar structure that lines the intestine's absorptive cells, enhancing the surface area for digestion and absorption of nutrients.

Microvilli

Microscopic cellular membrane protrusions that increase the surface area for absorption, especially in the epithelial cells of the small intestine.

Surface Area

The total area that the surface of an object occupies, which is significant in processes such as absorption and evaporation.