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What are equivalnts and milliequivalents?

Answer 1

Equivalents are the mols of ions multiplied by their valency... and that's what makes this tricky and thus, outdated and generally discouraged for active usage.

Milliequivalents are analogous and 1000 times smaller in magnitude, i.e. there are 1000 milliequivalents, or #"mEq"#, in one equivalent.

A very old term that relates to normality concentrations... The most "modern" definition has that...

For example,

In short, it is the mols of ions multiplied by their valency... and that's what makes this tricky and thus, outdated and generally discouraged for active usage.

NOTE: It DOES find its uses however, in determination of an unknown acid, for instance. One can only calculate its equivalent weight, and then multiply by either #2# or #3# with the forethought that the acid might be diprotic or triprotic, respectively.

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Answer 2

Jose Ayala

Equivalents and milliequivalents are units of measurement used in chemistry to quantify the reactive capacity of substances in chemical reactions. One equivalent is the amount of a substance that can donate or accept one mole of protons (H+ ions). A milliequivalent is one thousandth of an equivalent, representing a smaller unit of measure.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.