The Rate Constant for a Particular Second-Order Reaction Is 0

question 12

Multiple Choice

The rate constant for a particular second-order reaction is 0.47M^-1s^-1. If the initial concentration of reactant is 0.25 mol/L, it takes __________ s for the concentration to decrease to 0.080 mol/L.

• A)18
• B)1.4
• C)8.5
• D)4.0
• E)0.08

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Definitions:

Insulators

Materials that resist the flow of electrical current, often used to protect or separate conductors.

Electrons Stationary

Conceptually refers to electrons not moving or being in a static state within a material, although in reality, electrons are always in motion due to thermal energy.

Moisture

The presence of water or other liquid, in vapor form or as tiny droplets, within a substance or environment.

Charged Electroscope

A device used to detect the presence of electric charge, either positive or negative, by the movement of a metal foil.