Ch.4 - Chemical Quantities & Aqueous ReactionsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Give the oxidation number of phosphorus in each of the following:

H2P2O7 2− 

Solution: Give the oxidation number of phosphorus in each of the following:H2P2O7 2− 

Problem

Give the oxidation number of phosphorus in each of the following:

H2P2O7 2− 

Solution

Oxidation state or oxidation number is a number assigned to an element in a compound that represents the number of electrons lost or gained by that element.


These are the guidelines in determining the oxidation number of H2P2O72−:

•  Hydrogen, when bonded to non-metals has an oxidation state of (+1)

•  Oxygen, when not a peroxide or superoxide has an oxidation state of (-2)

•  For ions, the oxidation number is equal to the charge


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