Question

Suppose a buffer solution is made from formic acid (HCHO2) and sodium formate (NaCHO2). What isthe net ionic equation for the reaction that occurs when a small amount of sodium hydroxide is added to the buffer?A)NaOH(aq)+ HCHO2(aq) -> NaCHO2(aq) + H2O(l)B) Na+(aq) + HCHO2(aq) -> NaH(aq) + HCO2+(aq)C) OH-(aq) + HCHO2(aq) -> CHO2-(aq) + H2O(l)D) H3O+(aq) + OH-(aq) -> 2H2O(l)E) NaOH(aq) + H3O+(aq) Na+(aq) + 2H2O(l)

Answer 1

Answer:

C) OH⁻(aq) + HCHO₂(aq) → CHO₂⁻(aq) + H₂O(l)

Explanation:

The net ionic equation is a chemical equation for a reaction that lists only those species participating in the reaction.

When there is an addition of base in a buffer, the acid will react with the base to produce water and conjugate base. Thus, the reaction is:

OH⁻(aq) + HCHO₂(aq) → CHO₂⁻(aq) + H₂O(l)

-You don't write the sodium of NaOH because is not involved in the reaction-

I hope it helps!