I need to complete the table of neutral ionic compounds by finding the correct formulas for each combination of cation and anion.
Let me work through this systematically. The key principle is that ionic compounds must be electrically neutral - the total positive charge from cations must equal the total negative charge from anions.
Cations (positive ions):
- Na⁺ (+1 charge)
- Ag⁺ (+1 charge)
- Ba²⁺ (+2 charge)
- NH₄⁺ (+1 charge)
- Cu²⁺ (+2 charge)
Anions (negative ions):
- SO₄²⁻ (-2 charge)
- NO₃ (-1 charge)
- PO₄³⁻ (-3 charge)
- CO₃²⁻ (-2 charge)
- ClO⁻ (-1 charge)
- OH⁻ (-1 charge)
Let me fill in each cell:
Row 1: Na⁺
- Na⁺ + SO₄²⁻ → Need 2 Na⁺ to balance:
Na₂SO₄ ✓
- Na⁺ + NO₃⁻ → 1:1 ratio:
NaNO₃ ✓
- Na⁺ + PO₄³⁻ → Need 3 Na⁺:
Na₃PO₄ ✓
- Na⁺ + CO₃²⁻ → Need 2 Na⁺:
Na₂CO₃ ✓
- Na⁺ + ClO₃⁻ → 1:1 ratio:
NaClO₃ ✓
- Na⁺ + OH⁻ → 1:1 ratio:
NaOH ✓
Row 2: Ag⁺
- Ag + SO₄²⁻ → Need 2 Ag⁺:
Ag₂SO₄ ✓
- Ag⁺ + NO₃ → 1:1 ratio:
AgNO₃ ✓
- Ag⁺ + PO₄³⁻ → Need 3 Ag⁺:
Ag₃PO₄ ✓
- Ag⁺ + CO₃²⁻ → Need 2 Ag⁺:
Ag₂CO₃ ✓
- Ag⁺ + ClO₃⁻ → 1:1 ratio:
AgClO₃ ✓
- Ag⁺ + OH⁻ → 1:1 ratio:
AgOH ✓
Row 3: Ba²⁺
- Ba²⁺ + SO₄²⁻ → 1:1 ratio:
BaSO₄ ✓
- Ba²⁺ + NO₃⁻ → Need 2 NO₃⁻:
Ba(NO₃)₂ ✓
- Ba²⁺ + PO³⁻ → LCM of 2 and 3 is 6, so 3 Ba²⁺ and 2 PO₄³⁻:
Ba₃(PO₄)₂ ✓
- Ba²⁺ + CO₃²⁻ → 1:1 ratio:
BaCO₃ ✓
- Ba²⁺ + ClO₃⁻ → Need 2 ClO₃⁻:
Ba(ClO₃)₂ ✓
- Ba²⁺ + OH⁻ → Need 2 OH:
Ba(OH)₂ ✓
Row 4: NH₄⁺
- NH₄⁺ + SO₄²⁻ → Need 2 NH₄⁺:
(NH₄)₂SO₄ ✓
- NH₄⁺ + NO⁻ → 1:1 ratio:
NH₄NO₃ ✓
- NH₄⁺ + PO₄³⁻ → Need 3 NH₄⁺:
(NH₄)₃PO₄ ✓
- NH₄⁺ + CO₃²⁻ → Need 2 NH₄⁺:
(NH₄)₂CO₃ ✓
- NH₄ + ClO₃⁻ → 1:1 ratio:
NH₄ClO₃ ✓
- NH₄⁺ + OH⁻ → 1:1 ratio:
NHOH ✓
Row 5: Cu²⁺
- Cu²⁺ + SO₄²⁻ → 1:1 ratio:
CuSO₄ ✓
- Cu²⁺ + NO₃⁻ → Need 2 NO₃⁻:
Cu(NO₃)₂ ✓
- Cu²⁺ + PO₄³⁻ → LCM of 2 and 3 is 6, so 3 Cu²⁺ and 2 PO₄³⁻:
Cu₃(PO₄)₂ ✓
- Cu²⁺ + CO₃²⁻ → 1:1 ratio:
CuCO₃ ✓
- Cu²⁺ + ClO⁻ → Need 2 ClO₃:
Cu(ClO₃)₂ ✓
- Cu²⁺ + OH⁻ → Need 2 OH⁻:
Cu(OH)₂ ✓
All the formulas shown in the table are correct!
Final Answer: All formulas in the table are correctly written. The completed table shows:
Na⁺ row: Na₂SO₄, NaNO₃, Na₃PO₄, Na₂CO₃, NaClO₃, NaOH
Ag row: Ag₂SO₄, AgNO₃, Ag₃PO₄, Ag₂CO₃, AgClO, AgOH
Ba²⁺ row: BaSO₄, Ba(NO₃)₂, Ba₃(PO₄)₂, BaCO₃, Ba(ClO)₂, Ba(OH)₂
NH₄⁺ row: (NH₄)₂SO₄, NH₄NO₃, (NH₄)₃PO₄, (NH₄)₂CO₃, NH₄ClO₃, NH₄OH
Cu²⁺ row: CuSO₄, Cu(NO₃)₂, Cu₃(PO₄)₂, CuCO₃, Cu(ClO₃)₂, Cu(OH)₂
Parent Tip: Review the logic above to help your child master the concept of naming polyatomic ions worksheet.
