1. Complete the cation and anion columns of the table in Model 1. Be careful to show the charges on the ions.
- HCl: Cation = H₃O⁺, Anion = Cl⁻
- HBr: Cation = H₃O⁺, Anion = Br⁻
- H₂S: Cation = 2H₃O⁺, Anion = S²⁻
- HF: Cation = H₃O⁺, Anion = F⁻
2. Why does hydrosulfuric acid contain two hydrogens?
- Two hydrogens with a +1 charge are required to balance the 2– charge of the sulfide anion.
3. Look at the formulas and names of the binary acids in Model 1.
a. What prefix is used at the beginning of the name for all binary acids?
- Binary acids begin with the prefix “hydro-.”
b. What suffix is used at the end of the name for all binary acids?
- The names of binary acids end with “-ic,” followed by the word “acid.”
4. The prefix “bi” means “two.” Propose a reason that the acids in Model 1 are all referred to as “binary” acids.
- All binary acids have two different elements or atoms in them.
5. Write a rule for naming binary acids.
- All binary acids begin with the prefix hydro-, which precedes the name of any nonmetal other than hydrogen, in the compound. The name of this nonmetal is modified to end with the suffix -ic.
- Example: hydro______ic acid.
Parent Tip: Review the logic above to help your child master the concept of naming acids worksheet answers.
