Aqueous Solutions of Phosphoric Acid and Sodium Nitrite Are Combined

question 39

Multiple Choice

Aqueous solutions of phosphoric acid and sodium nitrite are combined, and the following equilibrium is established. The equilibrium constant K_c for this reaction is greater than one. Based on this information, which of the following statements is correct?

• A) Phosphoric acid is a weaker acid than nitrous acid.
• B) Nitrous acid is a weaker acid than water.
• C) The nitrite anion is a weaker base than the dihydrogen phosphate anion.
• D) The dihydrogen phosphate anion is a stronger acid than nitrous acid.
• E) Phosphoric acid is a stronger acid than nitrous acid.

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