Phosphoric Acid (H₃PO₄) Has Three Dissociable Protons, with the PK_a's

question 52

Essay

Phosphoric acid (H₃PO₄) has three dissociable protons, with the pK_a's shown below. Which form of phosphoric acid predominates in a solution at pH 4? Explain your answer.
Acid
pK_a
H₃PO₄
2.14
H₂PO₄^-
6.86
HPO₄^2-
12.4

Analyze the validity of logical arguments through truth tables.

Apply rules of inference to determine the validity of arguments.

Recognize various logical fallacies and valid argument forms.

Differentiate between valid and invalid arguments based on their logical structure.

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Definitions:

Bonds

Fixed income instruments that represent a loan made by an investor to a borrower, typically corporate or governmental.

Nominal Return

The amount of profit or loss realized from an investment without adjusting for factors like inflation.

Expected Inflation

The rate at which the general level of prices for goods and services is rising, and subsequently, purchasing power is falling, as anticipated by consumers, investors, and economists.

Real Return

The rate of return on an investment after adjusting for inflation.