What Is the [H₂AsO₄^-] for a Solution Labeled 0

question 77

Multiple Choice

What is the [H₂AsO₄^-] for a solution labeled 0.10 M arsenic acid (H₃AsO₄) ? [Ka1 = 6 × 10^-3, Ka2 = 1 × 10^-7, Ka3 = 3 × 10^-12]

• A) 1 × 10^-7
• B) 6 × 10^-3
• C) 0.02
• D) 0.08
• E) 6 × 10^-10

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Definitions:

Standard Deviation

A statistical measure that quantifies the amount of variation or dispersion of a set of data values.

Variability

The extent to which data points in a set differ from each other and from the average of the set, indicating the spread or dispersion.

Double-Blind Study

A double-blind study is a research design in which neither the participants nor the experimenters know who is receiving a particular treatment, to prevent bias.

Experimental Group

In an experiment, the group of participants who are exposed to the independent variable to assess its effect on a dependent variable.