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Welcome to this chemistry tutorial on the equivalent oxygen weight. In this guide, we will explore the concept of equivalent weight and specifically focus on the equivalent oxygen weight, a term used in stoichiometry and redox reactions. We will discuss the associated calculations and formulas, providing you with a comprehensive understanding of this concept and its significance in chemical analysis and reaction calculations.

g | |

g | |

Weight of oxygen (W) = |

Equivalent weight(E_{w}) = |

Equivalent weight is a concept used to compare the combining or reacting weights of different substances. It allows for the quantitative analysis of chemical reactions and the determination of reactant ratios.

Equivalent oxygen weight refers to the weight of an element or compound that is chemically equivalent to one oxygen atom or one mole of oxygen gas (O_{2}).

Equivalent oxygen weight plays a crucial role in redox reactions, where oxygen is often involved as an oxidizing or reducing agent.

The formula for calculating the equivalent oxygen weight is as follows:

Equivalent Oxygen Weight = Molecular Weight / n

In this formula, the molecular weight represents the weight of the substance in question, and n denotes the number of oxygen atoms that are chemically equivalent to the substance.

The concept of equivalent oxygen weight is commonly used in chemical analysis and reaction calculations. For example, in environmental chemistry, the determination of chemical oxygen demand (COD) is crucial in assessing water quality and pollution levels. The equivalent oxygen weight is employed to quantify the amount of oxygen required to oxidize organic matter in a water sample, providing insights into the overall pollution load and the efficiency of wastewater treatment processes.

Jöns Jacob Berzelius, a Swedish chemist, made significant contributions to the field of stoichiometry and the concept of equivalent weight. Berzelius developed the modern concept of equivalent weight and introduced the idea of valence, which is closely related to the concept of equivalence in chemical reactions. His work laid the foundation for the quantitative analysis of chemical reactions and the understanding of stoichiometry.

Another noteworthy individual is Robert Boyle, an Irish chemist and physicist. Boyle is known for his pioneering work in the field of stoichiometry and his formulation of Boyle's law, which relates the volume and pressure of a gas at constant temperature. His contributions to the understanding of gas behavior and chemical reactions laid the groundwork for the development of equivalent weight calculations and the quantitative study of chemical reactions.

By recognizing the achievements of these key individuals, we gain insight into the historical advancements and breakthroughs that have shaped the field of equivalent weight determination and its applications in chemical analysis and stoichiometry.

Now that you have familiarized yourself with the concept, formula, and real-life applications of the equivalent oxygen weight, you can apply this knowledge in various chemical analyses, reaction calculations, and stoichiometric calculations, contributing to our understanding of chemical reactions and their quantitative aspects.

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