The Kinetics of the Decomposition of Dinitrogen Pentaoxide Is Studied

question 8

Multiple Choice

The kinetics of the decomposition of dinitrogen pentaoxide is studied at 50°C and at 75°C. Which of the following statements concerning the studies is correct?

• A)The rate at 75°C will be greater than the rate at 50°C because the activation energy will be lower at 75°C than at 50°C.
• B)The rate at 75°C will be greater than the rate at 50°C because the activation energy will be higher at 75°C than at 50°C.
• C)The rate at 75°C will be less than the rate at 50°C because the molecules at higher speeds do not interact as well as those at lower speeds.
• D)The rate at 75°C will be greater than at 50°C because the concentration of a gas increases with increasing temperature.
• E)The rate at 75°C will be greater than the rate at 50°C because the number of molecules with enough energy to react increases with increasing temperature.

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Definitions:

Phenol

An aromatic compound characterized by a hydroxyl group attached to a benzene ring, used in the manufacture of plastics and pharmaceuticals.

Aromatic R-group

A designation for the side-chain attachment to an aromatic ring, where "R" signifies a variable group or side chain in chemical structures.

Standard Amino Acids

The 20 amino acids that are encoded by the standard genetic code, integral to biological processes as the building blocks of proteins.

Side Chain

The part of a molecule that is attached to a core structure and varies among molecules of the same class, influencing the properties of the molecule.