A Reaction Was Experimentally Determined to Follow the Rate Law

question 72

Multiple Choice

A reaction was experimentally determined to follow the rate law, Rate = k[A]² where k = 0.456 s^-1M^-1. Starting with [A]_o = 0.500 M, how many seconds will it take for [A]_t = 0.250 M

• A) 2.85 x 10^-2 s
• B) 1.14 x 10^-1 s
• C) 1.52 s
• D) 4.39 s
• E) 5.48x10^-1 s

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Definitions:

Coefficient Of Correlation

An evaluative score indicating the intensity and directional path of a linear connection between two factors.

Variation

Variation refers to the degree to which data points in a dataset or population differ from each other and from the mean.

Dependent Variable

In an experiment or study, it is the variable that is being tested and measured, expected to change in response to alterations in the independent variable.

Coefficient Of Correlation

A statistical measure that quantifies the degree to which two variables change together; ranging from -1 to 1.