Medication and Drugs

How many milligrams is 20 meq of potassium chloride?

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Wiki User
08/18/2012
  1. i believe 10 meqs of potassium is equal to 390 mg's of potassium, therefore, one meq, is equal to 39 mg's potassium
  2. Not sure where you get your answer but according to drugs.com 10meg is equal to 750 mg of potassium
  3. 20mEq of potassium chloride is 781.960 mg of elemental potassium [K], and 709.060 mg of elemental chlorine [Cl] (which is 1491.0 mg of potassium chloride [KCl]). Here's how to figure it:

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mg = (mEq • atomic, molecular or formula weight) / valence

Atomic weight of potassium [K] is 39.0983

Atomic weight of chlorine [Cl] is 35.453

The molecular weight of potassium chloride [KCl] is sum of the atomic weights above: 74.551 (rounded)

The valence of potassium chloride is 1

Thus:

(20mEq potassium chloride • 74.551) / 1 = 1491.0 mg potassium chloride

Which breaks down to 781.960 mg of elemental potassium [K], and 709.060 mg of elemental chlorine [Cl].

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