The Following Pictures Represent Equal Volumes of Aqueous Solutions of Three

question 215

Multiple Choice

The following pictures represent equal volumes of aqueous solutions of three acids HA (A = X,Y,or Z) ;water molecules have been omitted for clarity.
-Arrange the acids in order of increasing value of K_a.

• A)K_a(H
• Z)< K_a(H
• Y)< K_a(H
• B)K_a(H
• Y)< K_a(H
• Z)< K_a(H
• C)K_a(H
• Z)< K_a(H
• X)< K_a(H
• D)K_a(H
• X)< K_a(H
• Z)< K_a(H

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Definitions:

Standard Deviation

A measure of the amount of variation or dispersion of a set of values.

Interquartile Range

The difference between the third quartile (75th percentile) and the first quartile (25th percentile), a measure of variability that indicates the spread of the middle 50% of a dataset.

Coefficient Of Variation

A standardized measure of dispersion of a probability distribution or frequency distribution, calculated as the ratio of the standard deviation to the mean, expressed as a percentage.

Range

The difference between the highest and lowest values in a dataset.