# equivalent

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## equivalent

1. Maths
a. having a particular property in common; equal
b. (of two equations or inequalities) having the same set of solutions
c. (of two sets) having the same cardinal number
2. Maths Logic (of two propositions) having an equivalence between them

## Equivalent

The equivalent of an element is the weight, expressed in carbon mass units, that will combine with or replace one atomic weight of hydrogen or one-half atomic weight of oxygen.

The equivalent of an acid is equal to the acid’s molecular weight divided by its alkalinity (number of hydrogen ions).

The equivalent of a base is equal to the base’s molecular weight divided by its acidity (number of hydroxyl groups).

The equivalent of a salt is equal to the molecular weight of the salt divided by the sum of the charges of the cations or anions forming the salt.

In oxidation-reduction reactions, the equivalent of an oxidizing agent is equal to the quotient obtained as a result of dividing the agent’s molecular weight by the number of electrons obtained by the atom or atoms of the reduced element. The equivalent may vary, depending on the number of electrons accepted by the oxidizing agent.

The concept of equivalent is widely used in the stoichiometric calculations of chemical reactions.

S. A. POGODIN

References in periodicals archive ?
Higher serum TCDD and PCDD TEQs were associated with significantly lower semen parameters 10 years later in both unadjusted models (see Table S1) and models adjusted for BMI, smoking status, alcohol intake, season, and abstinence time (Figures 2 and 3 and Table 3).
Figure 3, Figure 4, and Figure 5 present the TEQ concentrations found in the blood samples from the four locations and the NHANES control group.
To shorten the channel length, the Ts/2-spaced TEQ data [bar.
TEQ has grown in its reputation and readership, and we continue to receive strong manuscripts.
Levels of non-dioxin-like PCBs, non-ortho PCBs, and TEQ were significantly positively associated with age, and levels of non-ortho PCBs and TEQ were significantly negatively associated with serum cotinine (Table 3).
When energy-users make purchases of energy or fuel, they surrender units to the energy retailer, accessing their TEQ account.
I thank Minister Jones and TEQ for the continued support of an event which is critical for Townsville and North Queensland economies.
This recognition, I admit, is entirely inadequate, but I want each and every one of you to know how much Associate Editor Reyes Quezada and the TEQ Editorial Board appreciate your work.
The TEQ values can be calculated using toxic equivalency factors (TEFs) that express the toxicity of various POPs in relation to the most toxic dioxin, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TEF = 1) (Van den Berg et al.
The Health TEQ bill was quickly endorsed by organizations such as the Medical Group Management Association (MGMA), the American Academy of Family Physicians (AAFP) and the College of Healthcare Information Management Executives--but not without reservations.
Ms Jones said Mr Dixon, managing director and founder of the award-winning Down Under Tours, would bring a wealth of experience to the TEQ Board.

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