What is the mEq wt of sodium phosphate (Na2 HPO4 ·7 H2 O) ?...

Name: Problem 27, Chapter 12: Essential Math and Calculations for Pharmacy Technicians
Uploaded: 2020-09-26T14:29:59-08:00
Duration: 38 s
Channel: Himanshu Garg
Description: What is the mEq wt of sodium phosphate (Na2 HPO4 ·7 H2 O) ?

Key Concepts

Equivalent Weight

The equivalent weight of a substance is defined as the mass that supplies or reacts with one mole of reactive species (such as H+ in acid-base reactions or electrons in redox reactions). It is determined by dividing the molecular weight by the number of equivalents available from the substance, a crucial concept in various quantitative chemical analyses.

Hydrated Compounds

Hydrated compounds are chemical compounds that include water molecules within their crystalline structure, known as water of crystallization. When calculating molecular weight or equivalent weight, the mass of these water molecules must be included, as they contribute to the overall composition of the compound.

Molecular Weight Calculation

Molecular weight calculation involves summing the atomic weights of all the atoms present in the chemical formula of a compound. This process is fundamental in determining the mass of a single mole of the compound and is a key step in further calculations such as the determination of equivalent weight.

Stoichiometry in Equivalent Calculations

Stoichiometry refers to the quantitative relationships between the reactants and products in a chemical reaction. In the context of equivalent weight, stoichiometry helps determine the number of reactive units (equivalents) per mole of compound, which is essential for calculating how much of the compound will provide one equivalent in a reaction.

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