To determine which acids have "hydro-" as part of their name, we need to identify acids that follow the naming convention for binary acids. Binary acids typically include "hydro-" at the beginning of their names, followed by the name of the nonmetal element. This nomenclature is usually reserved for acids composed only of hydrogen and one other nonmetal element.
Let's examine each of the given acids:
1. [tex]$H _2 SO _3$[/tex] (Sulfurous acid):
- This acid contains hydrogen, sulfur, and oxygen.
- It is a ternary acid (involving three elements: hydrogen, sulfur, and oxygen).
- Therefore, it does not follow the binary acid naming convention and does not have "hydro-" in its name.
2. HBr (Hydrobromic acid):
- This acid contains hydrogen and bromine.
- Since it only involves two elements (hydrogen and a nonmetal), it follows the binary acid naming convention.
- Therefore, this acid has "hydro-" in its name.
3. [tex]$HClO _2$[/tex] (Chlorous acid):
- This acid contains hydrogen, chlorine, and oxygen.
- It is a ternary acid (involving three elements: hydrogen, chlorine, and oxygen).
- Therefore, it does not follow the binary acid naming convention and does not have "hydro-" in its name.
4. HF (Hydrofluoric acid):
- This acid contains hydrogen and fluorine.
- Since it only involves two elements (hydrogen and a nonmetal), it follows the binary acid naming convention.
- Therefore, this acid has "hydro-" in its name.
5. [tex]$HNO _3$[/tex] (Nitric acid):
- This acid contains hydrogen, nitrogen, and oxygen.
- It is a ternary acid (involving three elements: hydrogen, nitrogen, and oxygen).
- Therefore, it does not follow the binary acid naming convention and does not have "hydro-" in its name.
Based on the analysis above, the acids that have "hydro-" as part of their name are:
- HBr (Hydrobromic acid)
- HF (Hydrofluoric acid)
Thus, the result is:
```
['HBr', 'HF']
```
