# Equivalent weight

Equivalent weight is the weight, the number of simple or complex substance that connects to 8 weight parts of oxygen or 1,008 weight parts of hydrogen or replacing the same amount of oxygen or hydrogen in their compounds. As substances react with one another in the weight amounts proportionate to their equivalent weight, then chemical calculations easy to make, using the equivalent weight. Gram equivalent called material mass in grams, numerically equal to the equivalent weight of this substance. Cm. also the Concentration of the Titration.

Equivalent weight (synonym chemical equivalent) - the weighted number of simple or complex substance, equal in this chemical reaction 8 weight parts of oxygen or 1,008 weight parts of hydrogen. The word "equivalent" understand: replaces the above amount of oxygen or hydrogen (or links to them).
Numerical values of the equivalent weight of a given substance can be different depending on which chemical reactions involved this substance. So, for example, is equivalent to the weight of sulphur in the formation of sulphur dioxide (S+O2=SO2) is equal to 1/4 of the atomic weight of sulfur, and in the reaction of obtaining sulfuric anhydride (2S+3O2=2SO3) 1/6 its atomic weight. Equivalent weight is easy weight unit in the quantitative study of chemical reactions, since the same number of equivalents reactive substances are their weight quantities that interact with each other completely: for example, one is equivalent to the weight of any acid neutralizes one is equivalent to the weight of any reasons, one is equivalent to the weight of any oxidant oxidizes one is equivalent to the weight of any of reducing agent, and so on, Gammaquanta substances called the number of grams of the substance, numerically equal to its equivalent weight.