The correct formula for nitrous acid is to be determined from the given compounds. Concept introduction: Oxo-anions are those ions that contain one or more oxygen atoms bonded to one central atom of another element. Rules for naming oxo-anions are: The most common of the oxo-anions have names that end with -ate, also known as root oxo-anions. The ion with one more oxygen atom than -ate is named a per…ate ion. The ion with one less oxygen atom than -ate is named an -ite ion. The ion with two less oxygen atoms than -ate is named a hypo…ite ion. When forming an acid from oxo-anions, -ate is converted to an -ic acid and an -ite is converted to an -ous acid.

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Chapter 2.7, Problem 3CP

Interpretation Introduction

Interpretation:

The correct formula for nitrous acid is to be determined from the given compounds.

Concept introduction:

Oxo-anions are those ions that contain one or more oxygen atoms bonded to one central atom of another element.

Rules for naming oxo-anions are:

The most common of the oxo-anions have names that end with -ate, also known as root oxo-anions.

The ion with one more oxygen atom than -ate is named a per…ate ion.

The ion with one less oxygen atom than -ate is named an -ite ion.

The ion with two less oxygen atoms than -ate is named a hypo…ite ion.

When forming an acid from oxo-anions, -ate is converted to an -ic acid and an -ite is converted to an -ous acid.

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