Write the formula for each of the following compounds that...

Name: Problem 46, Chapter 5: Introductory Chemistry
Uploaded: 2021-03-25T17:09:53-08:00
Duration: 2 min 54 s
Channel: Niamat Khuda
Description: Write the formula for each of the following compounds that contain polyatomic ions. Be sure to enclose the polyatomic ion in parentheses if more than one such ion is needed. a. barium sulfite b. calcium dihydrogen phosphate c. ammonium perchlorate d. sodium permanganate e. iron(III) sulfate f. cobalt(II) carbonate g. nickelous hydroxide h. zinc chromate

Write the formula for each of the following compounds that contain polyatomic ions. Be sure to enclose the polyatomic ion in parentheses if more than one such ion is needed. a. barium sulfite b. calcium dihydrogen phosphate c. ammonium perchlorate d. sodium permanganate e. iron(III) sulfate f. cobalt(II) carbonate g. nickelous hydroxide h. zinc chromate

Write the formula for each of the following compounds that contain polyatomic ions. Be sure to enclose the polyatomic ion in parentheses if more than one such ion is needed.
a. barium sulfite
b. calcium dihydrogen phosphate
c. ammonium perchlorate
d. sodium permanganate
e. iron(III) sulfate
f. cobalt(II) carbonate
g. nickelous hydroxide
h. zinc chromate

Key Concepts

Use of Parentheses in Formulas

The use of parentheses in chemical formulas is important when more than one instance of a polyatomic ion is required in a compound. Parentheses indicate that the subscript outside applies to the entire polyatomic ion, ensuring clarity in the formula's structure.

Oxidation State and Stock Nomenclature

Oxidation states are used to indicate the charge on a transition metal ion in a compound and are often specified in parentheses using Roman numerals in the compound name, as seen in Stock nomenclature. This information is crucial for correctly determining the ratio of ions when writing the chemical formula of a compound.

Ionic Compound Formula Writing

Writing formulas for ionic compounds involves combining cations (positively charged ions) and anions (negatively charged ions) in ratios that balance the total charge to zero. Understanding the charges on each ion allows for the determination of the correct subscript numbers in the chemical formula.

Polyatomic Ions

Polyatomic ions are charged chemical species composed of two or more atoms covalently bonded together, which act as a single unit with a common charge. When writing formulas for compounds that include these ions, it is important to know their formulas and charges to correctly balance the overall compound.

Chemical Nomenclature

Chemical nomenclature is the system of names used to identify chemical compounds. It includes rules that dictate how compounds are named based on their constituent elements and ions, and it distinguishes between various compound types such as ionic and covalent. This system helps in precisely describing the composition and structure of compounds.

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