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 ?
The newly approved product is the therapeutic equivalent of the reference listed drug product Trilipix Delayed-Release capsules, manufactured and developed by Abbvie Inc (NYSE: ABBV).
5 mg, the therapeutic equivalent to Endo Pharmaceuticals, Inc's reference listed medicinal product, Frova Tablets, 2.
Recreating that wheel would eliminate the key benefit of generic drugs --they are lower-cost, therapeutic equivalent versions of brand name drugs.
USA (Glenmark) for potassium chloride extended-release capsules USP, 10 mEq, the therapeutic equivalent to the reference listed drug product, potassium chloride extended-release capsules USP, 10 mEq, of Actavis Laboratories FL, Inc.
The company said the Metaxalone Tablets USP, 800 mg is the therapeutic equivalent to the reference listed drug, Skelaxin of King Pharmaceuticals Inc.
The company said the Memantine Hydrochloride Tablets USP, 5 mg and 10 mg, is the therapeutic equivalent to the reference listed drug, Namenda Tablets, 5 mg and 10 mg, of Forest Laboratories LLC.
The measure would authorize the agency to exclude pharmaceutical manufacturers not providing the best Medicaid price to the new program from MediCal, the state's Medicaid plan, except for drugs that do not have a therapeutic equivalent.
This product is a therapeutic equivalent generic version of the the US Food & Drug Administration approved Abilify (aripiprazole) tablets.
The company said Lamotrigine Orally Disintegrating Tablets in 25mg, 50mg, 100mg and 200mg is the therapeutic equivalent generic version of Lamictal ODT (lamotrigine) Orally Disintegrating Tablets, which has been approved by the US Food & Drug Administration (USFDA).

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