NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

What is the equivalent of 1 mEq for monovalent ions?

1. 1:1

2. 1:0.5

3. 2:1

4. 0.5:1

The correct answer is: 1:1

The equivalent of 1 mEq is equivalent to a ratio of 11. This means that for every 1 milliequivalent (mEq) of monovalent ions, there is an equal amount (1 mEq) of these ions. Choice B is incorrect because a ratio of 1:0.5 would mean that for every 1 mEq of monovalent ions, there is only 0.5 mEq of these ions. This does not align with the given information. Likewise, choice C is incorrect because a ratio of 2:1 would mean that for every 2 mEq of monovalent ions, there is only 1 mEq of these ions. Again, this does not align with the given information. Choice D is also incorrect because a ratio of 0.5:1 would mean that for every 0.5 mEq of monovalent ions, there is 1 mEq of these ions. This is the inverse of the correct answer and does not align with the given information. Therefore, the only correct choice is A, which is a ratio of 1:1.