Textbook Question
Assign oxidation numbers to each element in the following ions. (e) BrO-
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Ch.4 - Reactions in Aqueous Solution
McMurry8th EditionChemistryISBN: 9781292336145
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Table of contents
- Ch.1 - Chemical Tools: Experimentation & Measurement143
- Ch.2 - Atoms, Molecules & Ions134
- Ch.3 - Mass Relationships in Chemical Reactions149
- Ch.4 - Reactions in Aqueous Solution157
- Ch.5 - Periodicity & Electronic Structure of Atoms92
- Ch.6 - Ionic Compounds: Periodic Trends and Bonding Theory73
- Ch.7 - Covalent Bonding and Electron-Dot Structures47
- Ch.8 - Covalent Compounds: Bonding Theories and Molecular Structure51
- Ch.9 - Thermochemistry: Chemical Energy104
- Ch.10 - Gases: Their Properties & Behavior138
- Ch.11 - Liquids & Phase Changes43
- Ch.12 - Solids and Solid-State Materials56
- Ch.13 - Solutions & Their Properties98
- Ch.14 - Chemical Kinetics79
- Ch.15 - Chemical Equilibrium107
- Ch.16 - Aqueous Equilibria: Acids & Bases94
- Ch.17 - Applications of Aqueous Equilibria125
- Ch.18 - Thermodynamics: Entropy, Free Energy & Equilibrium66
- Ch.19 - Electrochemistry130
- Ch.20 - Nuclear Chemistry73
- Ch.21 - Transition Elements and Coordination Chemistry122
- Ch.22 - The Main Group Elements155
- Ch.23 - Organic and Biological Chemistry43
Chapter 4, Problem 111c
Assign oxidation numbers to each element in the following ions. (c) NO3-
Verified step by step guidance1
Assign the oxidation number of oxygen (O) as -2, which is common for oxygen in most compounds.
Let the oxidation number of nitrogen (N) be x.
Write the equation for the sum of oxidation numbers in the ion: x + 3(-2) = -1.
Simplify the equation: x - 6 = -1.
Solve for x to find the oxidation number of nitrogen.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Oxidation Numbers
Oxidation numbers are a way to keep track of electron transfer in chemical reactions. They represent the hypothetical charge an atom would have if all bonds were ionic. The rules for assigning oxidation numbers include that the oxidation number of an element in its elemental form is zero, and for monoatomic ions, it equals the charge of the ion.
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Oxidation Numbers
Polyatomic Ions
Polyatomic ions are ions composed of two or more atoms that are covalently bonded together and carry a net charge. In the case of the nitrate ion (NO3-), it consists of one nitrogen atom and three oxygen atoms, collectively carrying a -1 charge. Understanding the structure and charge of polyatomic ions is essential for correctly assigning oxidation numbers.
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Rules for Assigning Oxidation States
There are specific rules for assigning oxidation states that help in determining the oxidation number of each element in a compound or ion. For example, oxygen typically has an oxidation number of -2, while nitrogen can vary. In the nitrate ion, the sum of the oxidation numbers must equal the overall charge of the ion, which is -1, guiding the assignment of oxidation states.
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