NAPLEX (North American Pharmacist Licensure Examination) Practice Exam 2026 - Free NAPLEX Practice Questions and Study Guide

Question: 1 / 1820

What does 1:0.5 signify in mEq for ions?

Monovalent ions

Divalent ions

10.5 signifies the molar ratio of ions to the charge value. This ratio can be simplified to 2:1, indicating that for every 2 moles of ions, there is 1 mole of charge.

Option A, Monovalent ions, would signify a 1:1 ratio of ions to charge.

Option C, Trivalent ions, would signify a 3:1 ratio of ions to charge.

Option D, Polyvalent ions, would signify a ratio greater than 2:1, indicating the presence of multiple ions for every 1 mole of charge.

To clarify, a molar ratio of 2:1 does not necessarily mean that there are only two ions present, but rather that the ratio of ions to charge is 2:1. This is why option B, Divalent ions, is the correct answer.

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Trivalent ions

Polyvalent ions

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