Question

Question 4 (1 point) You will determine the concentration of an unknown diprotic acid using your standardized base. The chemical equation for this reaction can be expressed as: Vous déterminez la concentration d'un acide inconnu diprotique par le titrage avec une base étalonnée. La réaction chimique s'exprime comme: O a) H2A (aq) + 2 NaOH (aq) → Na, A (aq) + 2 H20 (1) Ob) HA (aq) + NaOH (aq) → NaA (aq) + H2O (1) Oc) H2A (aq) + NaOH (aq) → NaA (aq) + 2 H20 (1) d) diprotic acid + base yields salt and water l'acide diprotique + base donne un sel et l'eau

Answer 1

Diprotic acid is represented by H₂A(aq).

The base shown in the options is NaOH.

The reaction of acid and base produces salt and water.

Thus,

Acid + Base $\rightarrow$Salt + Water

Here, the diprotic acid dissociates as A^2-(aq) and 2H⁺(aq).

Thus, the salt forming in the acid-base reaction is Na₂A.

The balanced chemical equation for the reaction is as follows:

H₂A(aq) + 2NaOH(aq) $\rightarrow$ Na₂A(aq) + 2H₂O(l)