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#1
07-22-2008, 04:31 AM
 pharmacist_mct Guest Posts: n/a
Potassium conversion

How to convert Potassium in mg to mEq & mmol?

Last edited by pharmacist_mct; 07-22-2008 at 04:35 AM.
#2
07-22-2008, 05:36 AM
 JohnS Moderator Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,536 Rep Power: 19
Re: Potassium conversion

Quote:
 Originally Posted by pharmacist_mct How to convert Potassium in mg to mEq & mmol?
The atomic weight (in unified atomic mass units or daltons) is also the molar mass is grams per mole. You can get each element from the periodic table, which includes atomic weights, and for a molecule, add up the weights of all the atoms in the chemical formula.

Potassium is 39.0983 g/mol (39.10 is a good rounded value, or even 39, for many applications) Equivalence is based on the moles of electrons gained or lost in the ionized form from a mole of the substance. Since potassium has a valence of +1, moles and eqvs are identical. For something with a valence of +2 like calcium, one mole would be two eqv.

So 39.10 mg = 1 mmol = 1 mEq. The relationship is generally unique for each substance and has to be computed from atomic weights, and valence observed in chemical reactions.
#3
11-06-2009, 07:16 AM
 Unregistered Guest Posts: n/a
Re: Potassium conversion

Quote:
 Originally Posted by pharmacist_mct How to convert Potassium in mg to mEq & mmol?
convert 40meq to mg
#4
01-03-2010, 07:46 PM
 Unregistered Guest Posts: n/a
Re: Potassium conversion

Going by what was said above, 40 mEq must be equal to 40 mmol, as potassium has a valency of +1.

One mole of potassium would weigh 39.10 grams.

So 40 mmol would weigh 1.564 grams.

40 mEq = 40 mmol = 1.6 grams, rounding off.
#5
08-24-2010, 07:32 PM
 Unregistered Guest Posts: n/a
Re: Potassium conversion

please tell me how to convert 1mg of potassium to 8meq per day
#6
11-23-2010, 11:45 AM
 pwalters7391@cox.net Guest Posts: n/a
Re: Potassium conversion

#7
11-23-2010, 05:12 PM
 JohnS Moderator Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,536 Rep Power: 19
Re: Potassium conversion

Quote:
 Originally Posted by pwalters7391@cox.net Please advise how to convert 20 meq of Potassium to milligrams.
see post #2 or#4.
#8
01-15-2011, 06:06 PM
 Unregistered Guest Posts: n/a
Re: Potassium conversion

10 meq equal to how many mg
#9
01-16-2011, 02:18 AM
 JohnS Moderator Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,536 Rep Power: 19
Re: Potassium conversion

Quote:
 Originally Posted by Unregistered 10 meq equal to how many mg
see pots 2 and 4.
391 mg
#10
02-11-2011, 03:06 AM
 Unregistered Guest Posts: n/a
Re: Potassium conversion

Your replies are confusing. You say potassium is 39.10g then in another sentence it is 39.10mg. That is a life threathening difference. The average lay person is depending on and using this info.

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