What is the molarity of a solution that contains 36 mEq Ca²⁺ per liter?

Question

Quizplus · Accepted Answer

The molarity of a solution is determined by the number of moles of solute per liter of solution. The given amount is 36 milliequivalents (mEq) per liter. Since 1 equivalent of a substance is equal to its molar mass (in grams) divided by its valence, and 1 milliequivalent (mEq) is 1/1000 of an equivalent, the molarity can be calculated by converting milliequivalents to moles. For calcium (Ca), with a valence of +2, 36 mEq corresponds to 36/1000 equivalents. Since 1 equivalent of Ca2+ is 1 mole/2 (due to its +2 charge), 36 mEq is 36/1000 * 1/2 = 0.018 moles per liter, making the solution 0.018 M.

What Is the Molarity of a Solution That Contains 36