QQuestionChemistry
QuestionChemistry
Fill in the name and empirical formula of each ionic compound that could be formed from the ions in this table:
some ionic compounds
cation anion empirical formula name of compound
K+ IO−4 KIO^4
K+ IO−3 KIO^3
K+ IO− KIO
K+ IO−2 KIO^2"
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Answer
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Step 1: Identify the cation and anion in each ionic compound.
In an ionic compound, the cation is the positively charged ion, and the anion is the negatively charged ion. From the table, we can see that the cation is K+ in all cases. The anions are IO−4, IO−3, IO−, and IO−2.
Step 2: Write the empirical formula for each ionic compound.
The empirical formula of an ionic compound is the chemical formula that shows the simplest, most reduced ratio of atoms in a compound. Since we know the charge of each ion, we can determine the number of each atom in the empirical formula. For KIO^4: - K+ has a charge of + 1 - IO−4 has a charge of - 4 Since the charges must balance, we need four K+ ions for every IO−4 ion, giving us the empirical formula KIO^4. For KIO^3: - K+ has a charge of + 1 - IO−3 has a charge of - 3 Since the charges must balance, we need three K+ ions for every IO−3 ion, giving us the empirical formula KIO^3. For KIO: - K+ has a charge of + 1 - IO− has a charge of - 1 Since the charges must balance, we need one K+ ion for every IO− ion, giving us the empirical formula KIO. For KIO^2: - K+ has a charge of + 1 - IO−2 has a charge of - 2 Since the charges must balance, we need two K+ ions for every IO−2 ion, giving us the empirical formula KIO^2.
Final Answer
The ionic compounds and their names and empirical formulas are: | Cation | Anion | Empirical Formula | Name of Compound | | --- | --- | --- | --- | | K+ | IO−4 | KIO^4 | Potassium iodate | | K+ | IO−3 | KIO^3 | Potassium iodite | | K+ | IO− | KIO | Potassium iodide | | K+ | IO−2 | KIO^2 | Potassium iodine(2$) |
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