Textbook Question
Write chemical equations and corresponding equilibrium expressions for each of the three ionization steps of phosphoric acid.
17. Acid and Base Equilibrium
Triprotic Acids and Bases
Multiple Choice
Predict the products of the reaction below:
HNO2 + H2O ⇆
A
H2NO2+ + OH−
B
NO2− + H3O+
C
NO2 + H2O
D
NO2− + OH−
E
NO2 + H3O+
Verified step by step guidance1
Identify the type of reaction: The given reaction involves an acid (HNO2) and water, suggesting an acid-base reaction.
Determine the acid and base: HNO2 is a weak acid, and H2O can act as a base in this context.
Predict the products: In an acid-base reaction, the acid donates a proton (H+) to the base. HNO2 will donate a proton to H2O, forming NO2- and H3O+.
Write the balanced chemical equation: HNO2 + H2O ⇌ NO2- + H3O+.
Verify the charge and mass balance: Ensure that the number of atoms and the total charge are the same on both sides of the equation.
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