Write the formula for the polyatomic ion in NaNO 3.
Write the formula for the polyatomic ion in Ag2CO3.
Write the formula for the polyatomic ion in NaHCO3.
Write the formula for the polyatomic ion in BaSO4
NO3^- is nitrate ion.
CO3^2- is carbonate ion.
HCO3^- is bicarbonate (or hydrogen carbonate ion.
You get the idea.
Na+HCO3
To determine the formulas for the polyatomic ions in the given compounds, let's break down each compound step-by-step:
1. NaNO3:
- The symbol "Na" represents the cation sodium (Na+).
- The symbol "NO3" represents the polyatomic ion nitrate (NO3-).
- Combining the cation and the polyatomic ion, the formula for the compound NaNO3 is NaNO3.
2. Ag2CO3:
- The symbol "Ag" represents the cation silver (Ag+).
- The symbol "CO3" represents the polyatomic ion carbonate (CO3^2-).
- Combining the cation and the polyatomic ion, the formula for the compound Ag2CO3 is Ag2CO3.
3. NaHCO3:
- The symbol "Na" represents the cation sodium (Na+).
- The symbol "HCO3" represents the polyatomic ion bicarbonate (HCO3-).
- Combining the cation and the polyatomic ion, the formula for the compound NaHCO3 is NaHCO3.
4. BaSO4:
- The symbol "Ba" represents the cation barium (Ba^2+).
- The symbol "SO4" represents the polyatomic ion sulfate (SO4^2-).
- Combining the cation and the polyatomic ion, the formula for the compound BaSO4 is BaSO4.
To determine the formula for a polyatomic ion, you need to know the charges of the individual ions in the compound. Let's break down each compound to find the polyatomic ions:
1. NaNO3:
The Na+ cation has a charge of +1, while NO3- is a polyatomic ion called nitrate, which has a charge of -1. To balance out the charges, we need one Na+ ion for every NO3- ion. Therefore, the formula for the polyatomic ion in NaNO3 is NO3-.
2. Ag2CO3:
The Ag+ cation has a charge of +1, so there are two Ag+ ions to balance out the overall charge of +2. CO3^2- is a polyatomic ion called carbonate, with a charge of -2. Since we have two Ag+ ions, the formula for the polyatomic ion in Ag2CO3 is CO3^2-.
3. NaHCO3:
The Na+ cation has a charge of +1. HCO3- is a polyatomic ion called bicarbonate or hydrogen carbonate, which has a charge of -1. To balance the charges, we need one Na+ ion for every HCO3- ion. Therefore, the formula for the polyatomic ion in NaHCO3 is HCO3-.
4. BaSO4:
The Ba^2+ cation has a charge of +2. SO4^2- is a polyatomic ion called sulfate, which has a charge of -2. To balance out the charges, we need one Ba^2+ ion for every SO4^2- ion. Therefore, the formula for the polyatomic ion in BaSO4 is SO4^2-.