Write a formula for each of the following ionic compounds: a. sodium hydrogen sulfite b. lithium permanganate c. silver nitrate d. potassium sulfate e. rubidium hydrogen sulfate f. potassium hydrogen carbonate
The Correct Answer and Explanation is:
Here are the correct formulas for each of the given ionic compounds:
a. Sodium hydrogen sulfite → NaHSO₃
b. Lithium permanganate → LiMnO₄
c. Silver nitrate → AgNO₃
d. Potassium sulfate → K₂SO₄
e. Rubidium hydrogen sulfate → RbHSO₄
f. Potassium hydrogen carbonate → KHCO₃
Explanation:
Ionic compounds are formed by the combination of positively charged ions (cations) and negatively charged ions (anions). The goal is to create a compound that is electrically neutral overall, meaning the total positive charge must balance the total negative charge.
a. Sodium hydrogen sulfite (NaHSO₃):
Sodium ion is Na⁺ and hydrogen sulfite ion is HSO₃⁻. Since both have charges of +1 and -1, they combine in a one-to-one ratio to form NaHSO₃.
b. Lithium permanganate (LiMnO₄):
Lithium ion is Li⁺ and permanganate ion is MnO₄⁻. These also combine in a one-to-one ratio to form LiMnO₄.
c. Silver nitrate (AgNO₃):
Silver ion is Ag⁺ and nitrate ion is NO₃⁻. Their charges balance in a one-to-one ratio, giving the formula AgNO₃.
d. Potassium sulfate (K₂SO₄):
Potassium ion is K⁺ and sulfate ion is SO₄²⁻. Two potassium ions are needed to balance one sulfate ion, so the formula is K₂SO₄.
e. Rubidium hydrogen sulfate (RbHSO₄):
Rubidium ion is Rb⁺ and hydrogen sulfate ion is HSO₄⁻. Their charges balance equally, resulting in the formula RbHSO₄.
f. Potassium hydrogen carbonate (KHCO₃):
Potassium ion is K⁺ and hydrogen carbonate ion is HCO₃⁻. These combine in a one-to-one ratio, giving KHCO₃.
Understanding ion charges and balancing them is essential in writing correct formulas for ionic compounds. The name indicates the ions involved, and from there, the formula is determined by ensuring total charge neutrality.
