For a Solution of Phosphoric Acid, Write the Equation for (HPO₄^2-)

question 157

Multiple Choice

For a solution of phosphoric acid, write the equation for (HPO₄^2-) .

• A) K_a3/([H₃O⁺]³ + K_a1[H₃O⁺]² + K_a1K_a2[H₃O⁺] + K_a1K_a2K_a3)
• B) [H₃O⁺]/([H₃O⁺]³ + K_a1[H₃O⁺]² + K_a1K_a2[H₃O⁺] + K_a1K_a2K_a3)
• C) K_a1K_a2[H₃O⁺]/([H₃O⁺]³ + K_a1[H₃O⁺]² + K_a1K_a2[H₃O⁺] + K_a1K_a2K_a3)
• D) K_a1K_a2K_a3/([H₃O⁺]³ + K_a1[H₃O⁺]² + K_a1K_a2[H₃O⁺] + K_a1K_a2K_a3)
• E) K_a1[H₃O⁺]²/([H₃O⁺]³ + K_a1[H₃O⁺]² + K_a1K_a2[H₃O⁺] + K_a1K_a2K_a3)

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Definitions:

Standard Deviation

Measures the amount of variability or dispersion around an average, reflecting the risk associated with a variable’s stability in financial contexts.

Risk-Free Rate

The theoretical rate of return of an investment with zero risk, typically associated with government bonds.

Capital Allocation Line

A line on a graph that represents the risk-reward ratio of investments, showing the optimal portfolio mix between risk-free assets and risky assets.