Fill in the name and empirical formula of each ionic compound that could be formed from the ions in the table.
| cation | anion | empirical formula | name of compound |
|---|---|---|---|
| $Mn ^{2+}$ | $SO _3{ }^{2-}$ | | |
| $K ^{+}$ | $MnO _4^{-}$ | | |
| $Na ^{+}$ | $ClO _3^{-}$ | | |
Answer (2)
Determine the empirical formula by balancing the charges of the cation and anion.
Name the ionic compound by stating the name of the cation followed by the name of the anion.
For M n 2 + and S O 3 2 − , the empirical formula is M n S O 3 and the name is Manganese(II) sulfite.
For K + and M n O 4 − , the empirical formula is K M n O 4 and the name is Potassium permanganate.
For N a + and Cl O 3 − , the empirical formula is N a Cl O 3 and the name is Sodium chlorate.
The empirical formulas and names of the ionic compounds are: M n S O 3 , K M n O 4 , N a Cl O 3 and Manganese(II) sulfite, Potassium permanganate, Sodium chlorate, respectively. M n S O 3 , K M n O 4 , N a Cl O 3
Explanation
Problem Analysis We are given a table with cations and anions, and we need to determine the empirical formula and name of the ionic compounds formed by these ions.
Manganese(II) Sulfite For M n 2 + and S O 3 2 − , the charges are +2 and -2, respectively. Since the charges are balanced, the empirical formula is M n S O 3 . The name of the compound is Manganese(II) sulfite.
Potassium Permanganate For K + and M n O 4 − , the charges are +1 and -1, respectively. Since the charges are balanced, the empirical formula is K M n O 4 . The name of the compound is Potassium permanganate.
Sodium Chlorate For N a + and Cl O 3 − , the charges are +1 and -1, respectively. Since the charges are balanced, the empirical formula is N a Cl O 3 . The name of the compound is Sodium chlorate.
Final Answer Therefore, the completed table is:
cation
anion
empirical formula
name of compound
M n 2 +
S O 3 2 −
M n S O 3
Manganese(II) sulfite
K +
M n O 4 −
K M n O 4
Potassium permanganate
N a +
Cl O 3 −
N a Cl O 3
Sodium chlorate
Examples
Ionic compounds are used in various applications in everyday life. For example, sodium chloride (NaCl), also known as table salt, is used to season food. Potassium iodide (KI) is added to table salt to prevent iodine deficiency. Calcium carbonate (CaCO3) is the main component of limestone and is used in building materials and antacids. Understanding the formation and naming of ionic compounds is essential in chemistry and related fields.
The empirical formulas and names of the ionic compounds formed are: M n S O 3 (Manganese(II) sulfite), K M n O 4 (Potassium permanganate), and N a Cl O 3 (Sodium chlorate). Each formula represents the balance of charges between the respective cation and anion. The completed table provides a clear representation of these ionic compounds.
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