Question

part c provide the name of the oxyanion of the acid: h₂co₃(aq). spell out the full name of the ion.

Explanation:

Step1: Identify the acid and its dissociation

The acid given is $\ce{H2CO3(aq)}$, which is carbonic acid. When carbonic acid dissociates in water, it releases $\ce{H+}$ ions and the oxyanion. The formula for the oxyanion can be determined by removing the $\ce{H+}$ ions. For $\ce{H2CO3}$, removing 2 $\ce{H+}$ ions (since the acid has 2 $\ce{H+}$) gives $\ce{CO3^{2-}}$.

Step2: Name the oxyanion

The oxyanion $\ce{CO3^{2-}}$ is named carbonate ion. The naming of oxyanions for acids: for an acid with the formula $\ce{H_{n}XO_{m}}$, the oxyanion is formed by removing the $\ce{H+}$ ions, and the name is derived from the acid's name. Carbonic acid ($\ce{H2CO3}$) gives the carbonate ion ($\ce{CO3^{2-}}$).

Answer:

carbonate ion