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

Name: Problem 27, Chapter 4: World of Chemistry
Uploaded: 2020-07-02T14:27:50-08:00
Duration: 53 s
Channel: Lottie Adams
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. calcium phosphate b. ammonium nitrate c. aluminum hydrogen sulfate d. barium sulfate e. iron(III) nitrate f. copper(I) hydroxide

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. calcium phosphate b. ammonium nitrate c. aluminum hydrogen sulfate d. barium sulfate e. iron(III) nitrate f. copper(I) hydroxide

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. calcium phosphate
b. ammonium nitrate
c. aluminum hydrogen sulfate
d. barium sulfate
e. iron(III) nitrate
f. copper(I) hydroxide

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Key Concepts

Transition Metal Oxidation States

Transition metals often have variable oxidation states, which are indicated in the compound's name with Roman numerals. This oxidation state information is important for determining the metal's charge, which is essential for balancing the overall charge in the chemical formula.

Use of Parentheses with Polyatomic Ions

When a polyatomic ion appears more than once in a chemical formula, parentheses are used around the ion before adding a subscript. This notation clarifies that the subscript applies to the entire ion rather than to a single element within the ion.

Polyatomic Ions

Polyatomic ions are groups of two or more atoms covalently bonded together that behave as a single charged unit in chemical reactions. Understanding these is essential because they appear frequently in naming and writing chemical formulas, and their structure requires specific notation, especially when multiple copies are present in a compound.

Charge Balancing in Ionic Compounds

In an ionic compound, the total positive charge from the cations must exactly balance the total negative charge from the anions to form a neutral compound. This concept is critical when deriving chemical formulas as it determines the ratio in which different ions combine.

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